Advanced format ruling
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Card effect (current official text)Return 1 "Neos" Fusion Monster you control to the Extra Deck. If all the Fusion Material Monsters listed on that Fusion Monster are in your Deck, you can Special Summon them.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.