Silumgar Scavenger is a common Creature — Zombie Bird card from Modern Horizons (MH1), collector number 107. Current market price: $0.19 (foil $0.42), TCGplayer market prices via Scryfall.
Flying Exploit (When this creature enters, you may sacrifice a creature.) Whenever another creature you control dies, put a +1/+1 counter on this creature. It gains haste until end of turn if it exploited that creature.