Strider

When Strider enters the battlefield or deals
combat damage, 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.)
Fellowship — At the beginning of your end step,
if you control two or more permanents with Fellowship, you may transform Strider.