Edison format ruling
Stardust Xiaolong
Card effect (current official text)When you Synchro Summon "Stardust Dragon", you can Special Summon this card from your Graveyard in face-up Attack Position. Once per turn, if this card would be destroyed by battle, it is not destroyed.
Rulings
Special Summoning this monster is a Trigger Effect that that activates in the GY.
- If you have more than one "Stardust Xiaolong" in your GY when you Synchro Summon "Stardust Dragon," you can activate the effects of each of them.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.