Dragon Thunder (Event Pack 15)

[Permanent] If you have 3 or more energy in Rest Mode, you can activate this card from your hand without paying its energy cost. [Activate:Main/Battle] If your Leader Card is a "Shadow Dragon" card : Choose up to 1 "Shadow Dragon" card in your Leader Area or Battle Area and it gets +5000 power for the turn. If you paid the energy cost to activate this skill, choose up to 1 card in your opponent's Battle Area and negate its skills for the turn.