Chitterspitter is a rare Artifact card from Modern Horizons 2 Promos (PMH2), collector number 153s. Current market price: — (foil $2.08), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, you may sacrifice a token. If you do, put an acorn counter on this artifact. Squirrels you control get +1/+1 for each acorn counter on this artifact. {G}, {T}: Create a 1/1 green Squirrel creature token.