Spike Feeder is a special Creature — Spike card from Time Spiral Timeshifted (TSB), collector number 84. Current market price: $1.53 (foil $9.21), TCGplayer market prices via Scryfall.
This creature enters with two +1/+1 counters on it. {2}, Remove a +1/+1 counter from this creature: Put a +1/+1 counter on target creature. Remove a +1/+1 counter from this creature: You gain 2 life.