What kind of Abilities/Stats/Scalings shouldn't be Together?

Take off your "THIS IS FUCKING OP" hats for this one. This thread is about how to make kits or abilities OP by themselves and what kind should not be together.

Lets take 's kit for example.

His Q gives him a speed boost, Slow removal, and a Silence.

Thats 3 things in one ability.

His E does X damage every spin and it crits(1% of champ's hp if villain as true bonus damage).

Thats 2.5 things since the bonus true damage relies on having a point in his ult.

Both abilities are good and okay by themselves.

Now imagine his E having everything his Q has. Sounds OP doesn't it?

Another OP thing I'd would say would be AP scaling with Movespeed.

Think of stuff thats good by themselves, but completely broken if put together.