This is my team for my second playthrough it seems to need some changes as sometimes I wreck bosses and other times I struggle
Delta Charizard with deltacharzardite
Lunar cannon
Shadow sneak
Shadow ball
Dragon pulse
Flygon with armor or flygonite
Drakon voice
Boomburst
Bug buzz
Ancient roar
Delta roserade with life orb
Lunar cannon
Moon blast
New moon
Psychic
Delta haxorus with life orb
Iron head
Crunch
Aqua tail
Ice fang
Delta Scizor with choice band or Delta scizorite
Icicle crash
Ice shard
Close combat
Night slash
Delta bisharp
Acrobatics
High jump kick
Bulk up
Power up punch
Open to suggestions Delta bisharp may be replaced
Soon but I would enjoy your ideas also if moves are not the best that would help