Ravaging Riftwurm is a uncommon Creature — Wurm card from Future Sight (FUT), collector number 135. Current market price: $0.25 (foil $1.98), TCGplayer market prices via Scryfall.
Kicker {4} (You may pay an additional {4} as you cast this spell.) Vanishing 2 (This creature enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) If this creature was kicked, it enters with three additional time counters on it.