Hungering Yeti is a uncommon Creature — Yeti card from Fate Reforged (FRF), collector number 105. Current market price: $0.13 (foil $0.21), TCGplayer market prices via Scryfall.
As long as you control a green or blue permanent, you may cast this spell as though it had flash. (You may cast it any time you could cast an instant.)