>>21358434already mentioned will-o
skarm is free switch in for anything and seeds just make it easier, spikes skarm is trash and seeds negate sneaky pebbles damage sooo
Chesnaught is not a good Gengar check, I agree
Same with Clefable
Again, this goes back to the whole "how do defensive teams function" works. It don't matter in the slightest what Chesnaught can't beat, so long as it's able to handle a significant portion of the meta, which it can. Find whatever else Chesnaught loses to, it doesn't really matter.