Sílex de Karn (Karn's Sylex) (pt)
Legendary Artifact (CMC 3)
Karn's Sylex enters the battlefield tapped.
Players can't pay life to cast spells or to activate abilities that aren't mana abilities.
, , Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.