Originally Posted by smr

Alpinia squad typically needs at least 3 debuffers for her to defeat a raid boss by herself, Kerria only needs 2. Using Both Alpinia and Kerria lets you use Sakura though. Taunt ability on both Alpinia and Kerria of course so everyone else can deal as much damage as possible before retreating.

Why would you use Taunt on Kerria? I mean, sure she's a beastly tank, but her life drain takes her out of the "be the first to die role so other units can deal damage" since she'll most likely be the last standing anyways (and will always do more damage as a result); Recovery Boost flat out enhances the one thing that makes her so powerful (her bloomed ability of dealing extra damage with higher health benefits from the extended health pool from Recovery Boost as well which then makes her life drain heal more) and helps cover gaps in her dodging.

A similar argument for Alpinia: I get that the counterattacking makes Taunt look attractive, but the only mitigation Alpinia has is her life drain and it just isn't enough without being able to dodge; she needs other party members to take hits in order for her to heal more than she receives (which is why she tends to collapse not too long after everyone else dies).

What I'm using for Raid Bosses: Black Bacarra, Nerine, Cherry, Sakura, Kerria. I don't even bother making other parties.

Skill activation: 1.6 (Kerria: 57.6% to use skill which deals around 100k damage, healing for 10% of damage dealt)
Def Bonus: 72% (Kerria and two others)
Damage Reduction: 12.3%
Enemy ATK penalty: -15%
ATK bonus: 130%-220% (Kerria gets a minimum of 130%; if she gets the random boost from BB and Cherry the total is 220%)
Bonus damage: 15% (+Kerria's bloom ability: +1%-62.5%@max 125% health)
Dodge: (Kerria: 80% for first two turns, then 50% thereafter)

Even without the extra boost from BB and Cherry, Kerria still performs obscenely well. That said, I haven't been able to fight the super RB (Sibling Caterpillers) yet, but worst case scenario I'd just have to add more teams.



edit: Apparently, I just got lucky with getting RBs weak against Slice. Kerria went up against a L90 weak to Hit and ended up timing out after 9.2M damage. Not quite as OP as I thought when I wrote this.