Enchantment
Whenever a creature you control attacks and isn't blocked, 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 that creature, then put the card back or put it into your graveyard.)
“We could just planeswalk right to where we're going, but where's the fun in that?”
—Reyhsia