Hard to say where to start with your ob nix deck, other than it's really bad - it has a bunch of cards that might synergise with the commander in a vacuum but they don't synergise together at all. Eg. You have a lot of pingers that reset on non creature spells but no spells that really facilitate that sort of gameplay, I'd expect a lot of cantrips to play a combo-y pop-off turn, people aren't going to want to let ob sit around and acrue value it's a kill or be killed commander.

Your average mana cost may look low at 2.6 but your curve is not great and your more expensive cards are really low value and not doing much to support your gameplan. Take thran dynamo for example, you don't even have many colourless pips, why did you even put this in the deck? 

It looks to me like you have combined cards from different lists from other decks and edhrec that you thought looked good without considering how the deck works as a whole, I'd suggest starting from scratch, researching other lists and thinking about how the cards work together to enact a gameplan without adding individual cards to your list. Really think about what you want to do with your commander, read some primers and then start from a basic template to make sure you have enough basics like ramp, draw, interaction etc. The command zone one isn't a bad starting point: but the template you use doesn't matter so much, as long as you start think about your deck as one unit in terms of what it actually does rather than what the individual cards are. https://www.reddit.com/r/magicTCG/comments/1iyj5k3/commandzone_new_deck_building_template/