Bio III is a PvP-exclusive 
Summoner spell from Final Fantasy XIV that deals damage over time to a single target.
Mechanics[]
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Bio III Summoner 30
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Spell Job action |
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Damage over time effects deal damage every server tick, or 3 seconds, independent of the effect's duration. This means that the effect may deal damage anywhere between 0 and 3 seconds after it is applied, and in 3 second intervals afterwards.
Use[]
Bio III is used to deal damage over time to the target. It should always be applied as soon as possible against a target to maximize its effects. Against weak enemies expected to die in less time than its duration it may be safely skipped.
The ability 
Fester deals more damage to targets afflicted with Bio III, while 
Bane can be used to spread it to other nearby enemies. 
Tri-disaster inflicts Bio III and fills the Aetherflow Gauge while inflicting additional damage, and should take priority over the Bio III spell whenever it is off cooldown.
As an instant cast spell that activates the global cooldown, Bio III can be used to weave abilities that are off the global cooldown in between spell casts, such as the aforementioned Fester and Bane.
In order to maximize Bio III's damage over time, it is generally recommended to reapply it with under 3 three seconds remaining, as the final tick of damage from the effect can occur anywhere in that window. This may result in the loss of a tick, but waiting for the effect to drop off before reapplying can result in the loss of two or more ticks and greater DPS loss.
Patch history[]
| Version | Changes |
|---|---|
| Stormblood | Added at 40 potency, 30 second duration, 25-yalm range, 2.5 second GCD recast, and 6% base MP cost. |
| Patch 4.06 | Potency increased to 50. |
| Shadowbringers | Potency reduced to 40. MP cost set at 600 with MP system overhaul. |
| Patch 5.05 | Delay before status is applied reduced. |
| Patch 5.1 | Potency increased to 50. |
| Patch 5.2 | Potency reduced to 45. |
| Endwalker | Removed. |
| Version | Changes |
|---|---|
| Stormblood | Added at 400 potency, 2.3s recast, and 1500 MP cost. |
| Shadowbringers | Potency reduced to 200. Recast increased to 2.4s. MP cost reduced to 500. Also increased target's damage taken by 5%. |
| Patch 5.1 | Potency increased to 600. MP cost increased to 1000. No longer increases target's damage taken. |
Gallery[]
