Prism Guard is an ability exclusive to Pokémon Zeta and Omicron. It is the signature ability of Mega Milotic.
Inflicts damage to the foe from non-contact [sic]
When a Pokémon with Prism Guard is hit with a non-contact move, the attacker loses 1/8 of its own maximum HP, after all turn-based damage is dealt. If Prism Guard causes both the user and the attacker to faint, then the attacker will faint first.
Pokémon with Prism GuardEdit