Doomkaiser Dragon/Assault Mode

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of Assault Mode Activate. When this card is Special Summoned, Special Summon any number of Zombie-Type monster(s) from either player's Graveyard to your side of the field. Monster(s) Special Summoned this way are destroyed during the End Phase, and Effect Monster(s) have their effect(s) negated. When this face-up card is destroyed by a card effect, you can Special Summon 1 Doomkaiser Dragon from your Graveyard.