If I'm going first and I have an active Meloetta ex with the "Debut Performance" Ability, can I attach a TM:Evolution and use its "Evolution" attack on my first turn?
Yes, with Debut Performance Meloetta ex can use any attacks it has access to.



×2
-30Debut Performance
If you go first, this Pokémon can use attacks during your first turn.
Echoed VoiceDuring your next turn, this Pokémon's Echoed Voice attack does 80 more damage (before applying Weakness and Resistance).
Pokémon ex rule
When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards.
If I'm going first and I have an active Meloetta ex with the "Debut Performance" Ability, can I attach a TM:Evolution and use its "Evolution" attack on my first turn?
Yes, with Debut Performance Meloetta ex can use any attacks it has access to.
If I use Meloetta ex's "Echoed Voice" attack three turns in a row, would I do 190 damage on the third turn?
No, the bonus damage doesn't keep stacking. It is only applied for each next turn, so you would do 30, 110, 110, etc.
If I use Seismitoad's "Echoed Voice" attack three turns in a row, would I do 320 damage on the third turn?
No, the bonus damage doesn't keep stacking. It is only applied for each next turn, so you would do 120, 220, 220, etc.