I have found Geist to be pretty mediocre AND polarizing unless I'm running a tempo/aggro Azorius section. Against control it is absurd no matter what type of deck you are. Against aggro it's decent if you are aggro yourself and dog poop if you are anything else. Overall I believe it doesn't up-tick your win % unless you are said aggro/tempo deck.
Am I wrong here?
I am considering it for a cut.
In my opinion it is also a quite boring (hexproof + it has to attack to do its thing) card that I've been sleeping on (sleeping on the cut, that is) because it's for me it's always been a gold standard of powerful Azorius cards and it has history from Standard domination and because it is from the original Innistrad set.