should probably have posted this earlier but oh well. here's how the glitch works: power guard damages enemies on contact and reduces the damage taken by the same amount of damage dealt. dong dong chiang takes 8888 damage from all attacks. so if you have power guard active and manage to reflect damage onto dong dong chiang (only possible with very low weapon defense), your contact damage is reduced by 8888, which heals you. sorry for abusing this bug and not reporting it immediately, feel free to delete 20 reindeer milks from my character as compensation