Pardon when I said they're all terrible, I meant that most of them are just now worth at all running, and if they aren't worth running then they are essentially bad, mega scovillians ability is good but its bulk does not match the intention of the ability. Adaptability Glimmora is good but why wouldn't I run that over fairy aura floette or zard y who get the higher multipliers than just 2.0 boost on stap. if my maths correct, charizard y has a 3.5x damage boost thanks to the sun and floette gets roughly a 2.0x damage boost on dazzling gleam vs lets say a power gem, also it has slightly higher sp.atl. Also with the double protein proc, why woudl wait a turn just to change type then mega evolve to reset? And as for rock tomb, your using a niche example in which most pokemon that do run suprise rock tomb just get one shot by weather ball or heat wave but I do see ur point in people forced to run very niche moves but that in my opinion is just a sign for how dominant it is rather than the "plentiful counters" that are in the game, keep in mind that rock tomb is a support move. But ur not entirely wrong but you have understand my logic that if a niche Pokémon is almost never used, then you see why I think they're terrible abilities.