Arcades, the Strategist is a mythic Legendary Creature — Elder Dragon card from The List (PLST), collector number M19-212. Current market price: $2.85, TCGplayer market prices via Scryfall.
Flying, vigilance Whenever a creature you control with defender enters, draw a card. Each creature you control with defender assigns combat damage equal to its toughness rather than its power and can attack as though it didn't have defender.