Amumu, Anivia, Mundo, Karthus, Maokai, Singed, and Swain are the only champions in the game that have a toggle-able ability that drains the caster's resource over time.
Yet Anivia is the only one whose ability gets toggled off if she gets CCd... and it's an ultimate.
So can we do something about this Riot?
Probably because her toggle, compared to the other champs, is a ranged AOE away from her, and Amumu, Mundo, Karthas, Singed, and Swain are all toggles that are a part of the champ itself and radiate from them. If they get rooted or stunned, it may punish the enemy for doing so. Whereas if doing the same to Anivia, disabling her ult may save the enemy teammate.
It sounds balanced in theory to me. Maokai may be the other case but his ult also provides damage reduction aside from any damage, which also punishes the enemy stunning him.
