Tengu format ruling
Synchro Strike
Card effect (current official text)Target Synchro Summoned monster gains 500 ATK for each Synchro Material Monster used to Summon it, until the End Phase.
Rulings
- You cannot target a Synchro Monster when it is Special Summoned from the GY.
- You cannot target a Synchro Monster that was turned face-down by "Book of Moon", etc., when it is later Flip Summoned.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.