Quirrel

Bolster 1 (When Quirrel enters the battlefield, choose
a creature you control with the least toughness or tied
for the least toughness among creatures you control.
Put a +1/+1 counter on it.)
{t}: Look at the top card of your library. If it's a
land, reveal it and put it in your hand.
"I have something of an obsession with uncharted
places."