Submarineroid [POTD-EN008] Ultimate Rare Legacy of Darkness this card is Special Summoned

this card is Special Summoned to the owner's side of the field during the End Phase

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: OTS Tournament Pack 4 Card type: Normal Spell Rarity: Ultimate Rare Pay 1000 LP

and destroy that card

or Effect Monster Card

Submarineroid [POTD-EN008] Ultimate Rare Legacy of Darkness this card is Special SummonedSet: Power of the Duelist Card type: Effect Monster Rarity: Ultimate Rare Attack: 800 Defense: 1800 This card can attack your opponent directly. When it does, any Battle Damage this card inflicts to your opponent becomes the original ATK of this card. You can change this card to Defense Position at the end of the Damage Step.