Chitterspitter is a rare Artifact card from Jumpstart: Historic Horizons (J21), collector number 555.
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.