Suffocation

Instant, 1U (2)
Suffocation deals 4 damage to target player who played a red instant or sorcery spell that dealt damage to you this turn.
Draw a card at the beginning of the next turn's upkeep.¹
Illus. L. A. Williams

Crystal Keep Rulings Summaries

• It means "red sorcery or red instant" not "red sorcery or any instant". [Aahz 1996/06/24]

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Alliances (Uncommon)