Sinuous Striker is a uncommon Creature — Snake Warrior card from Hour of Devastation (HOU), collector number 45. Current market price: $0.10 (foil $0.10), TCGplayer market prices via Scryfall.
{U}: This creature gets +1/-1 until end of turn. Eternalize—{3}{U}{U}, Discard a card. ({3}{U}{U}, Discard a card, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Snake Warrior with no mana cost. Eternalize only as a sorcery.)