Convolute

Instant, 2U (3)
Counter target spell unless its controller pays {4}.
The words came to the sorcerer's lips but refused to budge any further.
Illus. Dany Orizio

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Ravnica: City of Guilds (Common)