REDU format ruling
Elemental HERO Aqua Neos
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)"Elemental HERO Neos" + "Neo-Spacian Aqua Dolphin"
Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization".) Once per turn: You can discard 1 card; destroy 1 random card in your opponent's hand. During the End Phase: Shuffle this card into the Extra Deck.
Rulings
- If this card was Special Summoned properly by its own effect, then you can Special Summon it from the GY with "Call of the Haunted", etc.
- If you control your opponent’s "Elemental Hero Neos" or "Neo-Spacian", you can return it to your opponent’s Deck to Special Summon this card.
- This card’s effect activates during every End Phase. If this card is not face-up on the field during the End Phase of the turn it was Special Summoned, its effect will still activate during the next End Phase that it is face-up on the field for, and be returned to the Extra Deck.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.