A simple OTK can be initiated in a "D/D" Deck if there is a "D/D Swirl Slime", "D/D/D Doom King Armageddon", and "D/D/D Oblivion King Abyss Ragnarok" in your hand. Use the effect of "Swirl Slime" to send itself and "Armageddon" to your Graveyard to Fusion Summon this card. Next, use the other effect of "Swirl Slime" to banish itself from the Graveyard and Special Summon "Abyss Ragnarok" from your hand. Use the effect of "Abyss Ragnarok" to Special Summon "Armageddon" from your Graveyard. With this card having 2800 ATK, "Abyss Ragnarok" having 2200 ATK, and "Armageddon" having 3000 ATK, they have a combined damage output of 8000.
This card's effect can compensate for the huge cost to activate "Cyber-Stein's" effect.