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Necro Mastery
Necrobinder
A — Strong
PowerRare2 ⚡
Summon Osty for 5. Whenever Osty loses HP, ALL enemies lose that much HP.
Why A-tier:
Turns your summon into a recurring damage source — the core payoff of an Osty-centric deck.
Best with:
Calcify, Spur, Osty builds