Stardust Dragon/Assault Mode

Edison Card Text
© Cannot be Normal Summoned/Set.
© Must be Special Summoned by "Assault Mode Activate" or by its own effect.
① If a Spell/Trap Card/Effect, or Monster Effect, is activated (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy it.
② During the End Phase, if this effect was activated this turn (and wasn't negated): You can Special Summon this card from your GY.
③ When this card on the field is destroyed: You can target 1 "Stardust Dragon" in your GY; Special Summon that target.
No targeting
No Damage Step effect
Banlist • Unlimited
Interactions
If LaDD negates Stardust Dragon/Assault Mode's return, does it try again?✓
Stardust Dragon/Assault Mode attempts to return from the Graveyard.
It only attempts to return once. If that activation is negated, it remains in the Graveyard.
If Stardust Dragon/Assault Mode tributes itself to negate Mirror Force and I chain War Chariot, does a Stardust still Summon?!
SD/Assault Mode activates to negate Mirror Force and War Chariot is chained.
No. Tributing for SD/Assault Mode is a cost. Since it is no longer on the field when Chariot resolves, it cannot Special Summon Stardust Dragon.
Rulings
edisonformat.net
●The ① can negate Spell/Trap Cards/Effects, as well as Monster Effects.
edisonformat.com
No edisonformat.com ruling available.