Spike Feeder is a uncommon Creature — Spike card from Stronghold (STH), collector number 118. Current market price: $3.66, 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.