If the Pokémon that Holon Energy GL is attached to also has a basic Energy card attached to it, that Pokémon can't be affected by any Special Conditions. If the Pokémon that Holon Energy GL is attached to also has a basic Energy card attached to it, damage done by your opponent's Pokémon-ex is reduced by 10. Ignore these effects if Holon Energy GL is attached to Pokémon-ex.
This card was included in the English EX Delta Species expansion, originating from the Japanese Holon Research Tower expansion. It was also printed in the Japanese Holon Research Tower Lightning Quarter Deck. In Japan, it was reprinted as a Holofoil PCG-P Promotional card and was one of a set of three awarded to participants of the Battle Road Stadium event, held at the regional Autumn 2005 Battle Road tournaments, who won a battle at the Premium Stage. The event comprised six stages: a competitor would play against others in Stages 1 through 5, and then against a Pokémon Card Laboratory employee at the Premium Stage. It was later reprinted in the English EX Dragon Frontiers expansion.