Lavinia, Azorius Renegade

Lavinia, Azorius Renegade
{W}{U}

Legendary Creature - Human Soldier | Power/Toughness: 2 / 2 (CMC 2)
Each opponent can't cast noncreature spells with converted mana cost 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.