Marsh Tyrant

When Marsh Tyrant 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.)
Whenever Marsh Tyrant deals combat damage to
a player, that player may discard a card. If the
player does not, you draw a card.