Maskwood Nexus is a rare Artifact card from Modern Horizons 3 Commander (M3C), collector number 299. Current market price: $2.25, TCGplayer market prices via Scryfall.
Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)