As long as Entei is your Active Pokémon, Entei and Energy cards attached to it aren't affected by effects from Trainer cards other than Stadium cards. As long as this Power is active, discard any Trainer cards attached to Entei. (This power works even if Entei is Asleep, Confused, or Paralyzed.)
Mega Flame メガフレイム
Flip 2 coins. For each tails, discard 1 Energy card from Entei, if it has any.
This card's artwork is part of a joint illustration that includes Raikou and Suicune. In Japan, a set of three postcards featuring the ensemble artwork from all the Premium File 3 cards were distributed in Volume 11 of Pokémon Card Trainers magazine, released on May 1, 2001.
The Japanese print features the Awakening Legends symbol, indicating that it is a promotional addition to the expansion.