As you know the basic of Aion Online, if you've ran into water you'll take damage while under it. So, this Aion cheat is a way to avoid it. If you are familiar with the concept of lava jumping in World of Warcraft, it works like that. Basically every time you hit the ground, you jump, and you don't take damage from water. I've found this works even if during the jump I was completely submerged. Enjoy!