Edison format ruling
Spacegate
Card effect (current official text)Each time a monster your opponent controls attacks or is attacked, place 1 Gate Counter on this card at the end of the Damage Step. During your Main Phase: You can send this card to the Graveyard; Special Summon 1 monster from your hand whose Level is less than or equal to the number of Gate Counters on this card.
Rulings
- Placing a Gate Counter onto Spacegate does not start a Chain.
- Sending Spacegate to the GY is a cost to activate its second effect.
- If Royal Decree is chained to the second effect of Spacegate, Spacegate's effect is negated because the effect activated on the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.