Looking for suggestions of my team as well more of a what to add to my team, What I have so far:
Ferrowthorn
>252 HP / 48 Def / 208 SpD (or as close as I could get)
Moves: Curse, powerwhip, ingrain, gyro ball (going to get stealthrock for it though)

Volcarona
>252 SpA / 4 SpD / 252 Spe
Moves currently: Flamethrower, Heat wave(getting replaced with hurricane), bug buzz and quiver dance

(Mega) Gengar
>4 HP / 252 SpA / 252 Spe
Moves: Thunderbolt, Shadow ball, focus blast, substitute

Cloyster (Skill link)
>4 HP / 252 Atk / 252 Spe
Moves: Icebeam, icicle spear, shell smash, razor shell

What should I add to my team? I was thinking about goodra or garchomp in one slot, with scolipede in another to be a bulky spike support. But I was recently pointed at Gastrodon which looks interesting.

I'm open to just about all suggestions. I'm really not sure it is I need because most battles I've been involved with recently have just been Gengar & Volcarona roflstomping a bunch of people who run half their team as starters.