This page contains old data for a previous iteration of Defender's Oath. It is archived here for posterity.
| Event duration: | 19:00 JST, November 21, 2016 - 17:00 JST, November 28, 2016 |
|---|---|
| 02:00 PST, November 21, 2016 - 00:00 PST, November 28, 2016 |
Defender's Oath/History is a story event. A loyalty character joins you at the start, and progressing through the story unlocks free quests and bosses. The November 2016 iteration of this event is the first to implement the "Renewal" format for old, reissued events. Boss battles, which used to be raid battles, are now solo-only. These boss battles are found in Special quests under the Event tab, and no items are required to summon them. Instead of the Draw Token system, there is now a shop to exchange items for items dropped from these battles.
This event is part one of the Four Knights story arc. Part two is Four Knights of a Fallen Land. Part three is Between Frost and Flame.
There was once a land blessed by a primal beast.
Until one day a great dragon awakens and swallows the primal beast.
Brave knights rush to save it from the dragon's clutches.
But before long the entire kingdom becomes entangled in a far greater conspiracy.
Make sure you complete all the quests, since each chapter, free quest, and raid boss awards 50 
Crystals on first-time completion. Complete the loyalty character's loyalty bar to keep him permanently, which also unlocks his Fate Episode for more Crystals.
If you have AP potions to spare, 
Damascus Crystals are a good investment for the future. There are 3 that you can buy from the event shop. Damascus Crystals currently are only available from Renewal events. You need 10 Damascus Crystals to create 1 
Damascus Ingot.
The event's SSR weapon, Balmung, is not good and should be used for skill fodder. But if you are a brand new player and your main element is Fire, at least one Fire copy of the sword is helpful to have around as a main weapon since SSR Fire swords are scarce outside of Premium Draws and events.
Found in Quests > Special > Event
| Level 30 Fafnir | |||||
|---|---|---|---|---|---|
| Cost to start: 20 AP | Unlock: Clear story quests | ||||
| Wave | Name | Lvl | HP | Charge | Abilities |
| Wave 1 | Wyvern Purebreed |  Lvl 15
|
51,800 | ♢♢♢ | |
| Fearer of the Purebred | Lvl 15
|
24,500 | ♢♢ | ||
| Boss | Fafnir | Lvl 30
|
620,000 | ♢♢♢ | |
| Rewards | ||
|---|---|---|
| First clear: Crystal ×50
| ||
| Bronze | Silver | Gold |
|
|
|
| Level 50 Sylph | |||||
|---|---|---|---|---|---|
| Cost to start: 30 AP | Unlock: Clear Level 30 Fafnir | ||||
| Wave | Name | Lvl | HP | Charge | Abilities |
| Wave 1 | Sentry | 20
|
50,000 | ♢♢ | |
| Sentry | 20
|
85,000 | ♢♢♢ | ||
| Wave 2 | Imperial Guard | 20
|
98,000 | ♢♢ | |
| Imperial Guard | 20
|
210,000 | ♢♢♢ | ||
| Boss | Sylph | 50
|
1,350,000 | ♢♢♢ | Enflame: Massive Fire damage to all allies and inflict  BurnedHP is lowered on every turn. Overdrive at 65%: Charge attack hits for roughly 6000 damage unmitigated against off-element. Inflicts  ATK DownATK is loweredand charge bar speed down. |
| ♢♢ | True power at 50%: Triggers massive defense for one turn. Casts Daia Arcanum, consuming all diamonds and granting  SacrificedSkills are modified by number of debuffs, raising Attack and lowering Defense based on the number of debuffs. | ||||
| Rewards | ||
|---|---|---|
| First clear: Crystal ×50
| ||
| Bronze | Silver | Gold |
|
| |
| Level 75 Sylph | |||||
|---|---|---|---|---|---|
| Cost to start: 50 AP | Unlock: Clear Level 50 Sylph. Limits: Max two clears per day. | ||||
| Wave | Name | Lvl | HP | Charge | Abilities |
| Wave 1 | Wyvern Purebreed | 30
|
610,000 | ♢♢♢ | |
| Fearer of the Purebreed | 30
|
250,000 | ♢ | ||
| Wave 2 | Fafnir | 50
|
4,100,000 | ♢♢♢ | |
| Wave 3 | Imperial Guard | 40
|
700,000 | ♢♢ | |
| Imperial Guard | 40
|
1,350,000 | ♢♢♢ | ||
| Boss | Sylph | 75
|
7,580,000 | ♢♢♢ | Charge attacks: Enflame: Massive Fire damage to all allies and inflict BurnedHP is lowered on every turn. Remedius Nodus: Hits all allies for roughly 9000 damage. Inflicts ATK DownATK is loweredand  Skill SealedCan't use skills. |
| ♢♢ | True power at 50%: Sylph gains a large amount of defense for the remainder of the fight. HP Triggers: 50%: Casts Daia Arcanum, dispelling debuffs and granting SacrificedSkills are modified by number of debuffs, raising Attack and lowering Defense based on the number of debuffs. | ||||
| Rewards | ||
|---|---|---|
| First clear: Crystal ×50
| ||
| Bronze | Silver | Gold |
|
|
|
| Level 70 Sylph | |||||
|---|---|---|---|---|---|
| Cost to start: 0 AP | Unlock: Randomly unlocks after completing Very Hard Fafnir, Extreme Sylph, or Maniac Sylph. | ||||
| Wave | Name | Lvl | HP | Charge | Abilities |
| Boss | Sylph | 70
|
7,500,000 | ♢♢♢ | Similar to Extreme Sylph, but a bit easier. |
| Rewards | ||
|---|---|---|
First clear:  Blue Sky Crystal
| ||
| Bronze | Silver | Gold |
|
|
|
Vane temporarily joins when the event starts. Earn 750 loyalty by winning quests and raids with him in the party to keep him after the event ends.
Note: Vane has a Cross-Fate Episode with 03
Lancelot, increasing his Attack by 600.
