REDU format ruling
Fusion Recovery

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Target 1 "Polymerization" in your GY, and 1 monster in your GY that was used as material for a Fusion Summon; add them to your hand.
Rulings
- You can use "Fusion Recovery" to retrieve a Fusion Material Monster that was used with "Power Bond" or "Fusion Gate" or "Polymerization".
- "Fusion Recovery" targets 1 monster and 1 "Polymerization" in the GY (so it will be negated by "Necrovalley" or "The End of Anubis").
- If 1 of the targeted cards is no longer in the GY when this effect resolve, you still resolve the rest of the effect as best you can.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.