Hey this is a team that I have had some success with and am hoping to revive some advice.
Team at glance
Thundrus
Machamp
Hydregion
Forretress
Celebi
Magnezone
First poke
Thundrus Expert Belt
Mischievous Heart
Evs 252 speed 252 special attack 4 hp
Hasty
U-turn
Thunderbolt
Taunt...