LO Moonblast Energy Ball Encore Whimsicott is able to:
Outspeed and OHKO
100% Diancie-Mega, Hydreigon, Scrafty
75% Keldeo (dies to own LO), Terrakion (dies if LO), Flame Orb Conkeldurr
18.8% Latios
12.5% Azumarill
80.2 - 95.7% Rotom-W
76 - 90.6% Hoopa-Unbound
70.2 - 80% Bisharp
67.8 - 80.1%...