Link - Hero Of The Wild

At the beginning of combat on your turn, each Merfolk creature you control 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 the exploring creature, then put the card back or put it into your graveyard.)

Whenever Hakbal of the Surging Soul attacks, you may put a land card from your hand onto the battlefield. If you don't, draw a card.