Tengu format ruling
Stardust Dragon
Card effect (current official text)1 Tuner + 1+ non-Tuner monsters
When a card or effect is activated that would destroy a card(s) on the field (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy it. During the End Phase, if this effect was activated this turn (and was not negated): You can Special Summon this card from your GY.
Rulings
- The ① effect can only negate Cards/Effects which would 100% destroy a card(s) on the field (it cannot negate cards/effects like "Deck Devastation Virus" (if there are no face-up monsters), or "Snipe Hunter).
- If the activation or effect of the ② effect is negated, it cannot activate again.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.