Atreus, Impulsive Son is a mythic Legendary Creature — God Archer card from Secret Lair Drop (SLD), collector number 2212. Current market price: $3.24 (foil $4.67), TCGplayer market prices via Scryfall.
Reach {3}, {T}: Draw a card for each experience counter you have, then discard a card. Atreus deals 2 damage to each opponent. Partner—Father & son (You can have two commanders if both have this ability.)