Peter, Star-Lord

Flying
When Peter, Star-Lord enters the battlefield, 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.)
If one or more creatures you control die during a turn, at the beginning of the next end-step, Peter, Star-Lord fights target opponent's creature with the greatest toughness or tied for
the greatest toughness.