Primite Howl

“Declare 1 Normal Monster Card name; you take no battle damage from battles involving your declared Normal Monsters or your "Primite" monsters (for the rest of this turn), then if you control no monsters, you can Special Summon 1 declared Normal Monster from your Deck or GY. During your opponent's turn: You can banish this card from your GY, then target 1 Normal Monster you control or in your GY; take control of 1 monster your opponent controls with higher ATK than that monster, until the End Phase.”