I'm Going On An Adventure! is a common Sorcery card from Unknown Event (UNK), collector number CW11a.
Exile target creature. It's on an adventure. When it enters from being on an adventure, it explores. (Its owner may cast it from exile. To have a creature you control explore, 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 creature, then put the card back or put it into your graveyard.) Flashback {4}{W}