Goat format ruling
Monster Recovery

Card effect (current official text)Target 1 monster you control that is owned by you; if that monster is still on the field, shuffle it and your entire hand into the Deck, also, after that, draw cards equal to the number of cards you shuffled from your hand into the Deck by this effect. (You cannot activate this card if you have a card in your hand that is owned by your opponent.)
Rulings
"Monster Recovery" may be activated on a Token.
- "Monster Recovery" may not be activated in the Damage Step.
- Q: What would happen if I attacked my opponents "Gemini Elf" with my "Jinzo," and they flipped "Monster Recovery?" Would they still lose LP? Or would the attack be negated? A: A replay would be triggered, and "Jinzo" is able to choose a new attack target, or attack directly if your opponent has no other monsters on the field. The original attack against "Gemini Elf" is treated as if it never happened, and the Damage Step was never reached, so no damage occurred from that first declared attack against "Gemini Elf."
- Steve Okegawa,
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.