Doomkaiser Dragon/Assault Mode [CRMS-EN019] Ultimate Rare Maximum Crisis You can only use this

You can only use this effect during your opponent's Battle Phase

Set: Gold Series 3 Card type: Quick Play Spell Rarity: Gold Rare Attack: 0 Defense: 0 Activate only by paying 1500 Life Points when your opponent activates a card or effect that would destroy a monster(s) on the field

you can Tribute Summon this monster by Tributing 1 DARK monster

Set: Soul Fusion Card type: Fusion/Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2400 "Thunder Dragon" + 1 Thunder monster Must be either Fusion Summoned

Set: Extreme Victory Card type: Effect Monster Rarity: Secret Rare Attack: 1000 Defense: 600 When this card is Normal Summoned

Doomkaiser Dragon/Assault Mode [CRMS-EN019] Ultimate Rare Maximum Crisis You can only use thisSet: Crimson Crisis Card type: Effect Monster Rarity: Ultimate Rare Attack: 2900 Defense: 2000 This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with "Assault Mode Activate". When this card is Special Summoned, Special Summon any number of Zombie Type monsters from either player's Graveyard(s) to your side of the field. Those monsters effects are negated, and they are destroyed during the End Phase this turn. When