If the effect of "Skill Drain" is applied after the effect of "Stardust Radiance Dragon" is applied, the effect of "Stardust Radiance Dragon" that was already applied is not negated, and the effect that prevents the targeted card from being destroyed once this turn is applied as usual.
Situation 1: My opponent activates Brotherhood of Fire Fist - Tiger King. I chained Stardust Radiance Dragon's effect to Tiger King. Will Stardust Radiance lose its one-time immunity? I'm going for no, using the above rulings.
Situation 2: Similar, but this time I activate Radiance Dragon effect on Tiger King summon (ie before Tiger King got to activate the effect). Again, will Stardust Radiance lose its immunity after Tiger King activate the effect further in the duel?
Thank you in advance.