Card Text:
Ward - Pay 3 life.
Whenever you gain life, Amalia Benavides Aguirre explores. Then, destroy all other creatures if Amalia's power is exactly 20. (To have it explore, reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)
Locations
