Undersimplify {1}{U}

Instant

Choose target spell. If it's a creature spell, it perpetually gets -2/-0. Counter that spell unless its controller pays {2}.

Prints (1)

Set	#	Rarity	Finishes	USD	Foil USD
Alchemy Horizons: Baldur's Gate (HBG)	40	common	nonfoil	—	—