Frost Titan is a mythic Creature — Giant card from The List (PLST), collector number M11-55. Current market price: $0.77, TCGplayer market prices via Scryfall.
Whenever this creature becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}. Whenever this creature enters or attacks, tap target permanent. It doesn't untap during its controller's next untap step.