Explorer's World

Each player may search their library for a
land card and put it on top of their library.
Each creature you control explores. (Reveal
the top card of your library. Put that card into
your hand if it is a land. Otherwise, put a
+1/+1 counter on the creature, then put the card
back or put it into your graveyard.)
If there is nothing to do there is everywhere to go.