The World's Equilibrium Cannot Be Maintained Forever (OP13-097) - Carrying On His Will: 3rd Anniversary Tournament Cards

[Main] You may rest 5 of your DON!! cards: If the only Characters on your field are "Celestial Dragons" type Characters, K.O. up to 1 of your opponent's Characters with a base cost of 6 or less.
[Counter] Your Leader gains +3000 power during this battle.