Ok, I’m noob but I’ve tried to play competitive for a while and I’ve been stucked at rank 7 for many days.
I noticed certain mons just be so versatile and broken, and In particular Garganacl tera ghost. So I got mine shiny maxed SpDef and Hp, got immunity to status ability.
Basically Garganacl against a lot of meta teams is broken, and you can solo the whole opponent team just switching him with another tanky like amoonguss or a versatile moveset dragon like dragonair.
Ghost is making him immune to fight and less vulnerable to iron types like gholdengo meanwhile they take x2 dmg from salt each turn.
A lot of players could also try to use an earthquake but you can just use protect to see if this is the case to switch next turn with dragonair (immune) and quickly burst them.
Or just using amoonguss to sleep enemies and with its hidden ability keep switching to mantain him full hp (1/3 hp healing switching out).
I wouldn’t call this tactic braindead but I’ve reached almost rank 11 without losing anymore (literally 0 losses with Garganacl).
I know that really good players could easily break my team, but I’m just pointing out that for average players like me a pokemon like Garganacl tera Ghost is literally doing everything.
Any advice is welcome to improve!
My actual team:
Dragapult
Volcarona
Gholdengo
Dragonair
Amoonguss
Graganacl