Dorn, Hand of Defiance

Whenever Dorn, Hand of Defiance attacks
or blocks, it explores. (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 this creature, then put the card back or put it into
your graveyard.)
{w}, Remove a +1/+1 counter from Dorn,
Hand of Defiance: You gain 3 life.