Jötun Grunt is a uncommon Creature — Giant Soldier card from The List (PLST), collector number CSP-8. Current market price: $0.31, TCGplayer market prices via Scryfall.
Cumulative upkeep—Put two cards from a single graveyard on the bottom of their owner's library. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)