Terisiare's Devastation is a rare Sorcery card from The Brothers' War Commander (BRC), collector number 56. Current market price: $0.33, TCGplayer market prices via Scryfall.
You lose X life and create X tapped Powerstone tokens. Then all creatures get -1/-1 until end of turn for each artifact you control. (The tokens are artifacts with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")