Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls. Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.
"I told Jace that Ravnica would fall apart if he didn't take his responsibilities seriously. I didn't want to be right."
![Lavinia, Azorius Renegade [Ravnica Allegiance Prerelease Promos]](http://tothetablebgc.myshopify.com/cdn/shop/files/02aaf396-3cb6-4ac6-902c-2faa776e7b48.png?v=1776547187&width=1445)
