REDU format ruling
Spiritual Energy Settle Machine

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)As long as this card remains face-up on the field, all Spirit monsters remain face-up on the field and do not return to their owners' hands during the End Phase even if they are Normal Summoned or flipped face-up. Discard 1 card from your hand during each of your End Phases. If you do not, destroy this card. When this card is removed from the field, all face-up Spirit monsters return to the owners' hands.
Rulings
- When this card is active, Spirit Monsters on both sides of the field do not return to their owner’s hand during the End Phase of the turn they were Summoned.
- Discarding 1 card during your End Phase is a maintenance cost and must be paid each turn. You may decide to not discard a card, and destroy this card instead.
- When this card is active, Spirit Monsters may still be returned to their owner’s hands by card effects such as Penguin Soldier and Compulsory Evacuation Device.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.