MTG Salvation

I have been playing commander for a while starting out with reanimator decks such as Meren and Karador but ive been looking for a deck that doesn't need to combo off to be competitive. so i've found rafiq and Im really liking it so far and would like some advice on how to make the deck better.

here is the tapped out link

http://tappedout.net/mtg-decks/20-03-17-cAz-rafiq-of-the-many/

Looks like a rock-solid Rafiq-voltron build. I would say that Favor of the Overbeing, Quietus Spike, and Grafted Exoskeleton all seem a little "win more" here. I'd consider some other options - Sovereigns of Lost Alara is a notable omission for Exalted creatures, while Sword of Vengeance, Sword of the Animist, Sigil of Valor, and Spirit Mantle feel like notable omissions for equipment and auras.

I'd probably most strongly consider more answers though - Counterspell, Azorius Charm, Austere Command, Bant Charm, Acidic Slime, Selesnya Charm, Detention Sphere. More draw/tutor/filter, such as Brainstorm and Wargate, are also worth considering although you are pretty well covered there.

Finally, in a G/x/y deck that is well-tuned, I would strongly consider using some combination of Farseek, Wayfarer's Bauble, Knight of the Reliquary, Nature's Lore, and Wood Elves over the signets to make you more resilient to mass artifact wipes.