I've also become unsatisfied with Superalloy Seraph Sylvinsius now that I've thought about it a bit further. So I'll be making some edits and see if it will fit better:

Name: Superalloy Seraph Sylvinsius
Level: 8
Attribute: LIGHT
Monster Type(s): Fairy/Fusion
Effect: 2 or more Gemini monsters
If this card was Fusion Summoned, during your Standby Phase, you can Tribute this card; Special Summon the Fusion Material Monsters that were used for its Fusion Summon. Any Gemini monsters Special Summoned by this effect are treated as Effect Monsters, and gain their effects.
ATK/DEF: 2400/2400