Seasoned Dungeoneer is a rare Creature — Human Warrior card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 610. Current market price: $4.10, TCGplayer market prices via Scryfall.
When this creature enters, you take the initiative. Whenever you attack, target attacking Cleric, Rogue, Warrior, or Wizard gains protection from creatures until end of turn. 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.)
All Commander Legends: Battle for Baldur's Gate cards and prices