How I'd tweak Morde after the season so he isn't pick/ban in LCS anymore

This is a simple yet fair nerf to him, make the morde player have to choose between these two things:

Take the buff -or- Take another objective with the ghost dragon

Since the dragon can be used to take an objective, you trade in a buff for everyone to get that objective. That gives morde players a careful decision to make, but at least they make the decision based on that game. This is a relatively minor change, it leaves things in the hands of that player and it wouldn't require any major nerfs with it.

Think of this as a decision between tempo (the dragon and a second objective now) and a resource (the buff) that a lot of games force you to make if you play them enough. This would also put him in a spot where he isn't heavily banned in ranked either.