Altair is a strong support character who provides many useful buffs. However, he requires his 5★ uncap to reach maximum utility, and he lacks a niche outside of providing important buffs and debuffs. As a result, he loses value for players who aren't strong enough to get his 5★ upgrades, or who can fill his role with other characters.
Strengths
Grants a party-wide 70% / 20% Critical Hit Rate UpAttacks made with elemental superiority have a chance to deal boosted DMG Strength: 70% chance of dealing 20% more damage.Duration: 2.5 turnsApplied during the attack phase. On the next turn, it'll have 2 turns remaining. on C.A. after 5★.
After 5★ level 90, provides a total -30% DEF Down (20% DEF DownDEF is lowered Strength: 20%Stacking: Dual + 10% Water DEF DownDEF is lowered for water DMG Strength: 10%) that will stack with Armor Break100% elemental damage to a foe. Inflict 20% DEF DownDEF is lowered Strength: 20%Base Accuracy: 80%Duration: 180 secondsStacking: Single. to hit the -50% DEF Down cap.
Level 95 support skill slightly boosts all allies' debuff success rate.
Weaknesses
Requires his 5★ uncap to become truly useful to the party.
Before level 90, his DEF Down doesn't quite do enough to be useful: Miserable MistInflict 25% ATK DownATK is lowered Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual and 25% DEF DownDEF is lowered Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual on all foes. is stronger and will overwrite it, while Armor Break100% elemental damage to a foe. Inflict 20% DEF DownDEF is lowered Strength: 20%Base Accuracy: 80%Duration: 180 secondsStacking: Single. will stack, but only brings the target down to -40% DEF Down.
Long cooldowns on his skills make his utility for longer fights questionable, especially since he doesn't have a niche that cannot be filled by anyone else.
Doesn't provide much damage on his own.
How to Play
All of Altair's skills should be used as needed. There is little reason not to use Battleplan: Crane DownInflict 15% ATK DownATK is lowered Strength: 15%Base Accuracy: 75%Duration: 180 secondsStacking: Dual and 15% DEF DownDEF is lowered Strength: 15%Base Accuracy: 75%Duration: 180 secondsStacking: Dual on all foes. At level 75: Debuffs increased to 20% ATK DownATK is lowered Strength: 20%Base Accuracy: 75%Duration: 180 secondsStacking: Dual and 20% DEF DownDEF is lowered Strength: 20%Base Accuracy: 75%Duration: 180 secondsStacking: Dual. At level 90: Debuff base accuracy increased to 85%From 75%. Also inflict 10% Water DEF DownDEF is lowered for water DMG Strength: 10%Base Accuracy: 85%Duration: 180 seconds on all foes. or Battleplan: Crescent MoonAll allies gain Charge Bar +30%Instantly boosts Charge Bar by 30% Strength: 30%, 50% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time) Strength: 50%Duration: Indefinite, and 30% C.A. DMG Cap Up (1 time)Charge attack DMG cap is boosted (1 time) Strength: 30%Duration: Indefinite. immediately, but you may want to save Battleplan: SurroundAll allies gain 20% ATK UpATK is boosted Strength: 20%Multiplier: NormalDuration: 3 turnsStacking: Dual and 20% DEF UpDEF is boosted Strength: 20%Duration: 3 turnsStacking: Dual. At level 55: Buffs increased to 30% ATK UpATK is boosted Strength: 30%Multiplier: NormalDuration: 3 turnsStacking: Dual and 30% DEF UpDEF is boosted Strength: 30%Duration: 3 turnsStacking: Dual. At level 100: Buffs further increased to 50% ATK UpATK is boosted Strength: 50%Multiplier: NormalDuration: 5 turnsStacking: Dual and 50% DEF UpDEF is boosted Strength: 50%Duration: 5 turnsStacking: Dual. Buff durations increased to 5 turns. All allies also gain 50% Water ATK UpWater ATK is boosted Strength: 50%Duration: 5 turns. (When caster's charge bar is at 100%: All allies also gain 15% DMG Cap UpMaximum amount of DMG that can be dealt per hit is boosted Strength: 15%Duration: 5 turns.) until you're about to use a powerful attack so you can guarantee the buffs will be active.
Synergy
Because of his well-rounded support role, Altair can be used in nearly any team composition.
Prioritise Debuff Success first, followed by Critical and DA. DEF is a good option after this, especially if you are using fimbuls and want to keep your HP high.
Prioritize both Debuff Success first, followed by Critical. Take at least 1★ in each DA node. 1★ in each ATK and DEF node can be taken to improve his damage and survivability.