REDU format ruling
Neos Wiseman

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Cannot be Normal Summoned or Set. Must be Special Summoned (from your hand) by sending 1 face-up "Elemental HERO Neos" and 1 face-up "Yubel" you control to the Graveyard, and cannot be Special Summoned by other ways. This card cannot be destroyed by card effects. At the end of the Damage Step, if this card battled an opponent's monster: Inflict damage to your opponent equal to the ATK of the monster it battled, and you gain Life Points equal to that monster's DEF.
Rulings
- If a monster Neos Wiseman battles is destroyed, Neos Wiseman's effect inflicts damage equal to that monsters original ATK, and you gain Life Points equal to its original DEF. If the monster remains on the field, Neos Wiseman inflicts damage equal to its current ATK, and you gain Life Points equal to its current DEF.
- If the monster Neos Wiseman battles is returned to its owner's Deck or hand, or it is flipped face-down, before the end of the Damage Step, Neos Wiseman's effect disappears.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.