Stardust Dragon
Stardust Can not negate spell speed 3 (Counter traps)
Stardust Can't not negate Solemn Warning not just because its spell speed 3 but also because the card does not hit the field
Stardust dragon can't be solemn judgmented when coming back from it's own effect
Stardust will return to the person who summoned it successively if reborned by opponent and use eff to neg by eg. dark hole
Stardust Dragon is not effected by Skill Drain because u can still ACTIVATE the effect
If necrovalley is face up on the field it will not effect stardust
Starlight Road
If i heavy storm and u activate starlight road i can activate MST to stop u from specing stardust because Starlight road must be face up on the field for that bit of the effect to resolve
U can solemn judgment and solemn warning starlight road
it has to be 2 or more cards YOU control