Karn's Sylex

Legendary Artifact

Karn's Sylex enters tapped. Players can't pay life to cast spells or to activate abilities that aren't mana abilities. {X}

,

, Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.

Illustrated by Adam Paquette · Dominaria United (DMU)

2022-09-09
If a spell or an activated ability that isn’t a mana ability has a cost that requires a player to pay life, that spell or ability can’t be cast or activated.
2022-09-09
Other things may still cause players to pay life, such as a resolving spell or ability.
2022-09-09
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities are activated abilities (such as cycling) and will have colons in their reminder text.
2022-09-09
An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate.
2022-09-09
Players may always pay 0 life, even if an effect says they can’t pay life.