Other known variants
Plasma Bane
If your opponent has any cards in their discard pile that have "Colress" in the name, this Pokémon can use the Trifrost attack for .
TrifrostDiscard all Energy from this Pokémon. This attack does 110 damage to 3 of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Dwelling within it is a power even greater than that of Reshiram or Zekrom, but the extreme cold keeps that power bound.
If my opponent has a card with "Colress" in its name in their Discard Pile and Pokemon League Headquarters is in play, can I use Kyurem's "Trifrost" attack with only one energy attached due to its "Plasma Bane" Ability?
Kyurem's Plasma Bane ability sets Trifrost's attack cost to one. Since the attack cost has been set to a specific number, Pokemon League Headquarters does not add to it.
For Kyurem's "Plasma Bane" Ability, does "Colress's Experiment" or "Colress's Tenacity" in the discard pile count as having "Colress" in their name?
Yes, and the Trainer Card "Colress" counts too.