
Whenever a creature you control enters, 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 the creature, then put the card back or put it into your graveyard.)
Path of Discovery has 8 printings, first in Rivals of Ixalan (2018). EDHREC ranks it #3,611 among Commander cards. It appears most in Bello, Bard of the Brambles decks (11,677 on EDHREC). 3 public decks on TCG run it. It has 8 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.