Marincess Marbled Rock

2+ WATER monsters You can target 1 "Marincess" card in your GY, except "Marincess Marbled Rock"; add it to your hand. You can only use this effect of "Marincess Marbled Rock" once per turn. When an opponent's monster declares an attack: You can send 1 "Marincess" monster from your hand to the GY; for that battle, monsters cannot be destroyed by battle, also you take no battle damage.