Bio (Final Fantasy XIV)

Bio
(バイオ, Baio?, lit. Bio)
Icon(s)
Availability
Required	Scholar 2
Classification
Type	Spell
Skillset	Job action
Effect	Deals damage over time
Element	Unaspected
Status	Bio
Specifications
MP cost	400
Cast time	Instant
Recast time	2.5 seconds (GCD)
Range	25 yalms
Duration	30 seconds (10 ticks)
Potency	DoT: 20 per tick Total: 200
Related pages
Recurring appearance	Bio (ability)

Bio is a Scholar spell from Final Fantasy XIV that deals damage over time to a single target. It is upgraded to Bio II at level 26.

See also: Bio II (Final Fantasy XIV), Bio III (Final Fantasy XIV), or Biolysis

Mechanics

	Bio Scholar 2	Spell Job action
Effects	Inflicts Bio on a single target for 30 seconds, dealing unaspected magic damage every 3 seconds Activates the global cooldown
Traits	Maim and Mend increases Bio's damage by 10% Corruption Mastery upgrades Bio to Bio II
Base damage over time formula: $Damage = \lfloor 20 * f(Magic Damage) \rfloor * f(Mind_{DMG}) \rfloor * f(Spell Speed) \rfloor * f(Determination) \rfloor * Trait \rfloor +1$ Where trait can be 1.1 with Maim and Mend or 1 otherwise.
Recast time formula: $Cast = \lfloor ( 100 - Haste ) * \lfloor ( 2 - f(Spell Speed) ) * 2500 \rfloor / 1000 \rfloor / 100$

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 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.

As an instant cast spell that activates the global cooldown (GCD), Bio can be used to weave abilities that are off the global cooldown (oGCD) in between spell casts, such as Whispering Dawn.

In order to maximize efficiency on Bio's damage over time, it is 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

Arcanist/Summoner version

Version	Changes
A Realm Reborn	Added as a level 2 Arcanist, Summoner, and Scholar spell. Had 40 DoT potency, 18s duration, 4% base MP cost, 25y range, and 2.5s cast time. Bio and Bio II were distinct spells, and their effects could be stacked.
Heavensward	Cast time reduced to instant.
Patch 3.22	PvP duration lowered to 12s.
Stormblood	No longer available in PvP. Bio II now replaced Bio via the Corruption Mastery trait. It was no longer possible to stack their effects.
Shadowbringers	DoT potency reduced to 20. Duration increased to 30s. MP cost set at 400 with MP system overhaul. No longer available to Scholars. New Scholar exclusive version added. See below for its patch history.
Patch 5.05	Delay before status was applied reduced.
Endwalker	Removed.

Scholar version

Version	Changes
Shadowbringers	Added.

Gallery

Removed Summoner version.