Karn's Sylex enters the battlefield tapped. Players can't pay life to cast spells or to activate abilities that aren't mana abilities. {X}, {T}, Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.
![Karn's Sylex [Dominaria United Prerelease Promos]](http://tothetablebgc.myshopify.com/cdn/shop/files/c2c5ccb5-88eb-47b3-80e0-f2f4f82afd9e.png?v=1776362118&width=1445)
