Blue Screen of Death

Legendary Instant Artifact Enchantment

(It's like flash but more card types.) Blue Screen of Death enters with 108 curse counters. {1}: Remove a curse counter from Blue Screen of Death. Whenever a player spends more seconds with priority during their turn than the number of curse counters on Blue Screen of Death, sacrifice it and they lose 6 life.

Not legal in Commander

View Blue Screen of Death on Scryfall