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