REDU format ruling
Red-Eyes Wyvern

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)During your End Phase, if you did not Normal Summon/Set a monster this turn: You can banish this card from your Graveyard; Special Summon 1 "Red-Eyes" monster from your Graveyard, except "Red-Eyes B. Chick".
Rulings
- This effect targets the "Red-Eyes" monster in your GY.
- If you discard this card due to hand size, its effect can't be activated that same End Phase.
- If your Normal Summon was negated by "Solemn Judgment", this card's effect cannot be activated in the End Phase.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.