Sawblade Skinripper is a uncommon Creature — Human Assassin card from Duskmourn: House of Horror (DSK), collector number 231. Current market price: $0.19 (foil $0.26), TCGplayer market prices via Scryfall.
Menace {2}, Sacrifice another creature or enchantment: Put a +1/+1 counter on this creature. At the beginning of your end step, if you sacrificed one or more permanents this turn, this creature deals that much damage to any target.