Since lots of crits now have buff and debuff some crits could have ability to :
-
Be immune to debuff for few turns
-
Make the opponent immune to buff for few turns.
Just an additional idea :
- Make the user have elemental advantage for few turns. Let's say you're a wind crit fighting a fire crit. If that effect is active, you'll deal critical damage. And I think to balance it out, your opponent will deal normal damage instead of weak damage. And miscrits with negate on already will have no effect.