Advanced format ruling
Neo Space
Card effect (current official text)"Elemental HERO Neos" and all Fusion Monsters that specifically list "Elemental HERO Neos" as a Fusion Material gain 500 ATK. Fusion Monsters that specifically list "Elemental HERO Neos" as a Fusion Material do not have to activate their effects during the End Phase that shuffle them into the Extra Deck.
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.