If my Kecleon with "Chromashift" Ability is knocked out while it had a Fairy energy attached, would I be able to use Diantha during my next turn?
Yes, you can.




x2Chromashift
This Pokémon is the same type as any basic Energy attached to it. (If it has 2 or more different types of basic Energy attached, this Pokémon is each of those types.)


Spinning AttackIts color changes for concealment and also when its mood or health changes. The darker the color, the healthier it is.
If my Kecleon with "Chromashift" Ability is knocked out while it had a Fairy energy attached, would I be able to use Diantha during my next turn?
Yes, you can.
If I have a Kecleon with the "Chromashift" Ability in play and two basic Water Energy and a basic Fighting Energy attached, and my opponent has a Jolteon with the "Thunderous Awakening" Ability and a Memory Capsule attached, would Kecleon still be considered a Fighting type Pokemon?
No, it would not. Thunderous Awakening would turn off Kecleon's Chromashift Ability completely, therefore Kecleon would be a Colorless type.
If Kecleon has no Energy attached and I attach a Psychic Energy to it when Old Cemetery is in play, will Kecleon's "Chromashift" Ability kick in before checking for Old Cemetery or will Kecleon get 2 damage counters?
Old Cemetery's effect will happen first, so Kecleon will receive 2 damage counters.