As we know, invincibility frames were added like crazy in Kingdom Hearts II. One of those areas was allies' abilities, likely because the developers realized the problem with no invincibility frames for abilities in Kingdom Hearts. The most famous example is giant Ursula, where Ariel pulling off a successful/full Spiral Wave attack was pretty infrequent. For some reason, Auron doesn't have any invincibility frames when using his Healing Water ability. At first I thought it was Auron himself, but his Divider ability has invincibility frames. Then I thought it was that his Healing Water animation was the same as his using an item animation, but Simba and Riku, the other world allies who have healing abilities, use the same animation when using their Healing Herb and Cure Potion abilities, respectively, and when using items, and they have invincibility frames. It's not exactly a problem, because when using an item, which doesn't have invincibility frames, if the character, including Sora, is interrupted, the item will not take effect if the interruption is right at the beginning, but it will take effect if it's already been thrown in the air. Both scenarios are the same with Auron's Healing Water; however, if it's the former, it'll still consume his MP, whereas the items just go back in the characters' inventory, where they can be attempted to be used again if still needed. Here's a demonstration. Pay close attention to the two times Auron attempts to heal Donald with his Healing Water ability--he fails the first time and wastes 99 of the 100 MP he had at the time. He got some back, though, thanks to being hit and MP Rage. :p I also show a demonstration of Auron being interrupted, but successfully using Healing Water on Donald because he wasn't interrupted right away. What do you guys think? Do you think it could be a bug on the developers' part? (@iwantedtoexplode, what do you think?) Edit: I've brought this up before indirectly when discussing other ally related things, but I've never officially raised a discussion about this.