Improvised Arsenal is a rare Artifact — Equipment card from Teenage Mutant Ninja Turtles (TMT), collector number 270. Current market price: $1.94 (foil $1.87), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+0 for each artifact you control. {4}{R}: Create a token that's a copy of this Equipment. Equip {R}