This article is about the Impossible Omega III raid. For the regular raid, see Yggdrasil (Raid). For the recruitable character, see Yggdrasil. For the Omega summon stone, see Yggdrasil Omega.
About Yggdrasil Arbos Omega
Unlock Requirements

Need help? Check out the Guide and Grids pages for a fight breakdown and example teams!

Raid Battles

CAUTION: Enemies take 90% reduced damage from elements other than Wind in these battles.

Phase 
Name 
Lvl 
HP 
Charge 
Mode 
Phase 1  Yggdrasil Arbos Omega 
200 
1,085,900,000 
◇◇ 
Yes 
Special Attacks 
Triggers and Notes 
 Targets: Random allies
Deals: Earth DMG (7hit / 200%) Effect: Skill Interval Changed (All allies) / Dispel CancelBuffs can't be removed or shortened Duration: IndefiniteLocal status effect / DMG MitigationDMG taken is lowered by a fixed amount Duration: 2.5 turnsLocal status effectApplied during the attack phase. On the next turn, it'll have 2 turns remaining. (Self)
 Targets: All allies
Deals: Earth DMG Effect: 50% Charge CutInstantly reduces Charge Bar by 50% Strength: 50% (All allies) / ArmoredDMG taken is lowered Duration: 2.5 turnsLocal status effectApplied during the attack phase. On the next turn, it'll have 2 turns remaining. (Self)

 60% boost to Stormwyrm's weapon skills.
 Starts battle with Support SkillATK and DEF are boosted based on number of buffs / ATK and DEF are lowered based on number of debuffs (Can't be removed)
Duration: Indefinite, Arbos EssentiaBased on lvl: ATK is boosted / DMG taken is cut / Chance of gaining 2 random buffs at end of turn (Can't be removed / Max: 10 / After being inflicted with debuffs 6 times within 1 turn: Lvl is lowered by 1 / Debuff count is reset) Duration: Indefinite, and Conditional LootDrop rate for conditional loot is boosted based on lvl (Can't be removed / Max: 10 / Lvl rises by 1 each time Essentia lvl is lowered) Duration: Indefinite.
 Lowering Arbos EssentiaBased on lvl: ATK is boosted / DMG taken is cut / Chance of gaining 2 random buffs at end of turn (Can't be removed / Max: 10 / After being inflicted with debuffs 6 times within 1 turn: Lvl is lowered by 1 / Debuff count is reset)
lvl raises Conditional LootDrop rate for conditional loot is boosted based on lvl (Can't be removed / Max: 10 / Lvl rises by 1 each time Essentia lvl is lowered) Duration: Indefinite lvl and contributes to honor gains.
 90% Trigger
 Casts Purgatio Luce.
 Casts Purgatio Luce.
 Mode Bar is reset.
 Moves to Phase 2.

Phase 2  Yggdrasil Arbos Omega 
200 
434,360,000 (40%) 
◇ 
Yes 
Special Attacks 
Triggers and Notes 
 Luminox Prosperitatis TR 40% 20%
 Targets: All allies
Deals: Earth DMG (1800%) Effect: C.A. SealedCan't use charge attack Duration: 2.5 turnsApplied during the attack phase. On the next turn, it'll have 2 turns remaining. (All allies) / HP Restored / Debuff Duration Cut / Forest's Benevolence IDMG is supplemented based on number of buffs (Can only be removed by ending a turn with 9 or more debuffs on the foe) Duration: IndefiniteLocal status effect / Forest's Benevolence IIATK and DEF are sharply boosted based on number of buffs (Can only be removed by ending a turn with 12 or more debuffs on the foe) Duration: IndefiniteLocal status effect / Forest's Benevolence IIIElemental DMG taken is reduced from the 31st hit of each turn / Buffs can't be removed or shortened (Can only be removed by ending a turn with 15 or more debuffs on the foe) Duration: IndefiniteLocal status effect (Self)
 Targets: Random allies
Deals: Earth DMG (7hit / 200%) Effect: Skill Interval Changed (All allies) / Dispel CancelBuffs can't be removed or shortened Duration: IndefiniteLocal status effect / DMG MitigationDMG taken is lowered by a fixed amount Duration: 2.5 turnsLocal status effectApplied during the attack phase. On the next turn, it'll have 2 turns remaining. (Self)
 Targets: All allies
Deals: Earth DMG Effect: 100% Charge CutInstantly reduces Charge Bar by 100% Strength: 100% (All allies) / ArmoredDMG taken is lowered Duration: 2.5 turnsLocal status effectApplied during the attack phase. On the next turn, it'll have 2 turns remaining. (Self) / Inflict StoneCan't attack and receives big DMG Duration: 1.5 turnsTakes 120% more damageApplied during the attack phase. On the next turn, it'll have 1 turn remaining. (Debuffs only inflicted on allies that take DMG)

 Removes all debuffs on Yggdrasil Arbos Omega.
 Casts Luminox Prosperitatis.
 Casts Purgatio Luce.
 Casts Luminox Prosperitatis.

N  Normal, OD  Overdrive, TR  Trigger 
Chest 1 
Chest 2 
Chest 3 
100% 
100% 
100% 
 100.0100.00% ±0.00% chance to be selected when chest drops.
Based on 946 drops from 946 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Immortal Fragment

 29.929.94% ±2.15% chance to be selected when chest drops.
Based on 368 drops from 1229 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  15.615.62% ±1.70% chance to be selected when chest drops.
Based on 192 drops from 1229 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Luteus Centrum  16.016.03% ±1.72% chance to be selected when chest drops.
Based on 197 drops from 1229 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Earth Urn  33.433.44% ±2.21% chance to be selected when chest drops.
Based on 411 drops from 1229 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. True Earth Anima  5.04.96% ±1.02% chance to be selected when chest drops.
Based on 61 drops from 1229 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Earth Quartz ×3

 15.615.61% ±1.70% chance to be selected when chest drops.
Based on 192 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  10.410.41% ±1.43% chance to be selected when chest drops.
Based on 128 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima ×2  31.731.71% ±2.18% chance to be selected when chest drops.
Based on 390 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Yggdrasil Omega Anima  4.84.80% ±1.00% chance to be selected when chest drops.
Based on 59 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Yggdrasil Omega Anima ×2  5.25.20% ±1.04% chance to be selected when chest drops.
Based on 64 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Omega Fragment  4.84.80% ±1.00% chance to be selected when chest drops.
Based on 59 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Genesis Fragment  27.627.56% ±2.10% chance to be selected when chest drops.
Based on 339 drops from 1230 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Genesis Bud

Chest 4 
Chest 5 
Blue 
100% 
50?% 
9.72% (~1,249,895)9.72% of total honor is required to guarantee a blue chest. Based on HP alone a minimum 1,055,495 honor is required to guarantee a blue chest. Typically 1,249,895 honor should be enough to guarantee a blue chest under normal circumstances. 
 100.0100.00% ±0.00% chance to be selected when chest drops.
Based on 944 drops from 944 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Archangel itemRandom SR Archangel Weapon or Queen

 93.093.02% ±0.91% chance to be selected when chest drops.
Based on 1959 drops from 2106 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Archangel itemRandom SR Archangel Weapon or Queen  1.41.38% ±0.42% chance to be selected when chest drops.
Based on 29 drops from 2106 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Yggdrasil Omega  5.65.56% ±0.82% chance to be selected when chest drops.
Based on 117 drops from 2106 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Omega Weapons  0.00.05% ±0.08% chance to be selected when chest drops.
Based on 1 drops from 2106 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Eternity Sand

 2.92.89% ±0.56% chance to be selected when chest drops.
Based on 70 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Rebirth Weapons  55.555.54% ±1.66% chance to be selected when chest drops.
Based on 1343 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  1.01.03% ±0.34% chance to be selected when chest drops.
Based on 25 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Omega Anima  7.47.44% ±0.88% chance to be selected when chest drops.
Based on 180 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Supreme Merit  3.33.35% ±0.60% chance to be selected when chest drops.
Based on 81 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Legendary Merit  26.626.63% ±1.48% chance to be selected when chest drops.
Based on 644 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. True Earth Anima  2.42.40% ±0.51% chance to be selected when chest drops.
Based on 58 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark  0.60.62% ±0.26% chance to be selected when chest drops.
Based on 15 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×2  0.10.08% ±0.10% chance to be selected when chest drops.
Based on 2 drops from 2418 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×3

Host 
MVP 
Conditional 
 5.65.61% ±1.69% chance to be selected when chest drops.
Based on 28 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Rebirth Weapons  51.351.30% ±3.68% chance to be selected when chest drops.
Based on 256 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  13.613.63% ±2.53% chance to be selected when chest drops.
Based on 68 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Omega Anima  2.02.00% ±1.03% chance to be selected when chest drops.
Based on 10 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Legendary Merit  21.221.24% ±3.01% chance to be selected when chest drops.
Based on 106 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. True Earth Anima ×2  3.63.61% ±1.37% chance to be selected when chest drops.
Based on 18 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark  1.61.60% ±0.92% chance to be selected when chest drops.
Based on 8 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×2  1.01.00% ±0.73% chance to be selected when chest drops.
Based on 5 drops from 499 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×3
  3.23.20% ±0.84% chance to be selected when chest drops.
Based on 38 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Rebirth Weapons  38.138.08% ±2.32% chance to be selected when chest drops.
Based on 452 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  1.21.18% ±0.52% chance to be selected when chest drops.
Based on 14 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Omega Anima  8.18.09% ±1.30% chance to be selected when chest drops.
Based on 96 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Supreme Merit  2.92.95% ±0.81% chance to be selected when chest drops.
Based on 35 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Legendary Merit  9.39.27% ±1.38% chance to be selected when chest drops.
Based on 110 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Soul Balm  29.829.82% ±2.18% chance to be selected when chest drops.
Based on 354 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. True Earth Anima  4.54.47% ±0.99% chance to be selected when chest drops.
Based on 53 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark  2.42.36% ±0.72% chance to be selected when chest drops.
Based on 28 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×2  0.60.59% ±0.37% chance to be selected when chest drops.
Based on 7 drops from 1187 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×3

 2.52.53% ±0.50% chance to be selected when chest drops.
Based on 68 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Rebirth Weapons  55.255.24% ±1.58% chance to be selected when chest drops.
Based on 1487 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Anima  0.60.63% ±0.25% chance to be selected when chest drops.
Based on 17 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Arbos Omega Anima  8.48.40% ±0.88% chance to be selected when chest drops.
Based on 226 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Supreme Merit  3.63.57% ±0.59% chance to be selected when chest drops.
Based on 96 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Legendary Merit  27.227.15% ±1.41% chance to be selected when chest drops.
Based on 731 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. True Earth Anima  1.91.93% ±0.44% chance to be selected when chest drops.
Based on 52 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark  0.60.56% ±0.24% chance to be selected when chest drops.
Based on 15 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×2  0.00.00% ±0.00% chance to be selected when chest drops.
Based on 0 drops from 2692 chests. Confidence intervals are assuming an approximately normal distribution at 90% confidence. Weapon Plus Mark ×3

Drop rates from the otokuro2 spreadsheets. Please check the source spreadsheets for up to date numbers. Drop table last updated: 20240624, all stated drop rates are estimates. The game changes over time. If the drop tables become incorrect please notify the wiki staff. 
Voice Lines
Resources


Standard Raids 

Omega  

Tier 2 Summons  

 

Primarchs  

Ultimate  


Impossible Raids 

Omega HL  

Regalia  

Ennead  

Malice & Menace  

 

Omega Rebirth  

Six Dragons  

 

 

Revans  

Super Ultimate  

 


References