she's a chrono witch, which is a witch that can additionally apply a passive slow on enemy units that enter her range.
Plat Chrono Witch Kokoro (ココロ)
Time Bomb (タイムボム): (0s; attack 1.6x; instant: magical AoE attack that halts enemies; AS: ; WT: ; CT: )
Ability: Witch Garden: witch and chrono witch cost -1 if Kokoro is a team member
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