Chittering Witch is a rare Creature — Human Warlock card from Bloomburrow Commander (BLC), collector number 180. Current market price: $0.33, TCGplayer market prices via Scryfall.
When this creature enters, create a number of 1/1 black Rat creature tokens equal to the number of opponents you have. {1}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn.