Currently #3 on the ladder but thx
Not really:
+2 252 SpA Life Orb Darkrai Sludge Bomb vs. 252 HP / 0 SpD Mega Diancie: 242-285 (79.6 - 93.7%) -- guaranteed 2HKO
(242, 244, 247, 250, 252, 256, 259, 261, 264, 266, 270, 273, 276, 278, 281, 285)
A little bit of chip damage and Diancie is not...