Max HP Boost

Max HP Boost is an effect that boosts the HP stat. Unlike most buffs, the HP buff stays active throughout the entire quest and cannot be buff-wiped by any means.

Even if the battle transitions to a new wave, the form of the enemy changes, or the unit dies, the HP buff will still stay intact.

HP buffs cannot stack with each other unless it stacks with the Self HP Buff. In terms of how HP buffs are determined when multiples of them are used, the highest HP buff takes precedence, regardless of whether it’s from BB/SBB or UBB.

During a Trial
HP buffs have unique interactions with units in all three squads. If the first squad is fully KO’d, the second squad will utilize the same HP buffs that were used in the previous squad.

Korzan's HP Buff on UBB
Infernal Ravager Korzan has an HP buff that is unique in that it targets only himself. It also cannot stack with other HP buffs. When Korzan dies along with the rest of the squad in Trial Zone, the unit that is in the same squad position as Korzan was originally prior to death will be able to utilize Korzan’s HP buff in subsequent squads.