Slippery Scoundrel is a uncommon Creature — Human Pirate card from Rivals of Ixalan (RIX), collector number 55. Current market price: $0.16 (foil $0.78), TCGplayer market prices via Scryfall.
Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) As long as you have the city's blessing, this creature has hexproof and can't be blocked.