Edison format ruling
Beckoning Light
Card effect (current official text)Discard your entire hand, then for each card you discarded to the GY by this effect, add 1 LIGHT monster from your GY to your hand.
Rulings
Discard all the cards in your hand, then select a number of LIGHT monsters in your GY equal to the number of cards you discarded, and add them to your hand.
- Discarding is not a cost.
- Beckoning Light doesn't target. When you resolve Beckoning Light, first discard, then pick cards to add to your hand. So you can add cards to your hand that you discarded while resolving Beckoning Light.
- You CANNOT activate Beckoning Light if you have no cards in your hand.
- You CANNOT activate Beckoning Light if there are fewer LIGHT monsters in your GY than there are cards in your hand, even if 1 or more of the cards in your hand are LIGHT monsters.
- You can activate Beckoning Light while Macro Cosmos is active, but since no cards will be discarded to the GY, you CANNOT add any LIGHT monsters from your GY to your hand [REF].
- If Disappear is chained, and there are now fewer LIGHT monsters in your GY than cards in your hand, Beckoning Light resolves without effect (you don't discard your hand or add cards to your hand).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.