I use atogatog, because I have problems.
I hate playing EDH at gamestores though. There are too many dickbags there with however many $$$ legacy cards they can find, so it's not really a game of fun, it's a game of "lol look at all my $$". They're not interested in seeing the interesting stuff you come up with. It's all about bragging about the pricetag, at least, around here.
but, it's satisfying to win with an Atogatog deck.
Skyship Weatherlight + Predator Flagship save the day usually.
It's really funny when you send a mob of atogs across the table and then have them eat your entire board and the have atogatog eat all of them. "Ok, Atogatog is a 25/25 now. You lose."
....or they swords to plowshare him and you're basically f*cked at that point. lol
BUT, even losing is worth it when you have :
I started making a Teferi EDH deck, too. I used it once and was told I was never allowed to use it again because it was basically a bunch of counters/draws/recurrable ways to screw the other player up (capsize, mind games, isochron scepter + snap).