At the end of most abilities that have an additional effect such as on going damage. The current rule is roll a d20, a 10 or better ends the effect at the end of the round. What would be the impact of making this number higher for both the player and the NPCs. Im thinking of making it better than 15 which changes it from a 45% failure to 75% failure. The reason for this is my group has the ability to pull natural 20s out of nowhere when ever they need them. They can do this on anyones dice and its in front of me as well.