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Agatha's Soul Cauldron

Legendary Artifact

You may spend mana as though it were mana of any color to activate abilities of creatures you control. Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron. : Exile target card from a graveyard. When a creature card is exiled this way, put a +1/+1 counter on target creature you control.