this is an amazing idea, but it would have to be limited. for example, Olaf's ult prevents disablers. if you use this on him, then it really shouldnt do anything because its "disabling" his his buffs. on Poppy's ult, i think you might have to be targeted with it for the spell to work. lets say this spell had a duration, cleanse would have to be able to remove it, for people who use cleanse, and ive seen people who do. it shouldnt be able to prevent stealth, i can say for sure that this would make players rage to the max if they were playing twitch or eve. in essence, i think the above poster was right when they said it only affects MS, AS, Armor, and MR buffs, but not shields. this would be very OP on champs, like Soraka. it shouldnt be allowed to cancle innate buffs, but rather a buff that you have placed on yourself instead of one that you have no control over.