Naganadel @ Choice Specs
EVs: 252 Sp. Atk/4 Sp. Def/252 Spe
-Draco Meteor/Dragon Pulse
-Sludge Wave (Singles)
Draco Meteor is your main move, but Dragon Pulse can be used if you don’t want to deal with stat drops. Sludge Wave is STAB for singles, but Sludge Bomb should be used for STAB in doubles. Fire Blast is for coverage against Steel types, who would otherwise wall Naganadel. Dark Pulse is for coverage against Psychic types.
Have fun with this set!