Hydreigon (86/114) [XY: Steam Siege]

[2] Cruel Fang (40)
During your opponent's next turn, any damage done by attacks from the Defending Pokemon is reduced by 40 (before applying Weakness and Resistance).

[1PD] Dark Burn (50x)
Discard as many Darkness Energy attached to your Pokemon as you like. This attack does 50 damage times the amount of Darkness Energy you discarded this way.