Pair that with the Dawn trainer card, which gives the player the ability to transfer energy from a benched Pokemon onto another, and one can start to chain together multiple instances of "Nightmare Aura" damage in one turn, finishing off several opposing creatures when combined with active Pokemon attacks
Dueling Nexus Players, welcome, this deck is called necroface necroface necroface
Getting this onto either commander seems like a good reason to fold up and start a new game
After having gone through all of the excitement of trying to break colour changing effects, it feels a little mundane to discuss a creature type
See my best card draw lists for the other colors blue, green, red, colorless, and white
Its also not unheard of for IRs to make it to the top of the heap in modern sets despite their lesser rarity