As an alternative way of performing the Demise/Doom OTK, Advanced Ritual Art can be used to send "Blue Eyes White Dragon" to the Graveyard to Summon Demise, King of Armageddon. Use the effect of "Demise" to clear the field, then use "Swing of Memories" to bring back "Blue Eyes White Dragon" and equip it with Megamorph. Then attack with both monsters to win.
Use to bring back any of your Gemini monsters.
* Choose Blazewing Butterfly and Gemini Summon it. Use its effect to Summon a different Gemini monster, so that it won't be destroyed at the end of the turn.
* Alternatively, Set a Soul Rope the turn before this card is used. When the monster is destroyed, a monster from your Deck can be Summoned.
Use with Elemental HERO Neos or Elemental HERO Neos Alius along with your "Neo-Spacians" for a Contact Fusion (although "Alius" would need to be Gemini Summoned for the Contact Fusion to work, so make sure there already a "Neo-Spacian" on your field from the previous turn before or somehow Special Summoned like with Common Soul).
* This card can also be used to Summon "Elemental HERO Neos" and use Wrath of Neos to both return "Neos" to the Deck and to destroy all cards on the field, then follow with a direct attack.
Use to bring back Doom Shaman, then Gemini Summon it to Special Summon another monster (usually one whose effect activates when sent to the Graveyard) such as Sangan or Yubel since it wont last long (though Shadow Delver also works quite nicely).
Equip Heart of Clear Water on your monster, so it won't be destroyed during the End Phase.
It can also be used to Summon Genex Controller, then Synchro Summon.