Heroist
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Okay, I need to step away. Here's what I suggest:
Aria assassinates (or attacks).
I move closer and cast Wave (if I hit our own units, I activate regeneration).
Tria throws a projectile or casts Reflection on the enemies in front, ideally on Tsukiko if possible.
Livia summons a storm, making sure not to hit our own units.
Ayano cleanses (but that's not certain).
Dillion attacks.
Aria assassinates (or attacks).
I move closer and cast Wave (if I hit our own units, I activate regeneration).
Tria throws a projectile or casts Reflection on the enemies in front, ideally on Tsukiko if possible.
Livia summons a storm, making sure not to hit our own units.
Ayano cleanses (but that's not certain).
Dillion attacks.
Whatever