Doesn't seem like there are many payoffs for infinite colorless mana with the
Power Artifact and Grim/Basalt.
Nim Deathmantle seems to be the only thing.
I guess casting the colorless portions of cards, but the deck is very low on draw, so its not like that is much of a factor.
I do think your ratio of mana to draw is going to leave you top decking most games.
You just have waaay too many Signets for amount of payoffs. You should definetely have some draw cards.
Wheel of Fortune,
Windfall,
Timetwister are almost certainly required, and this helps to make the
Smothering Tithe a better include in your deck.
You should include
Mystic Remora and
Rhystic Study.
Jhoira, Weatherlight Captain is also a draw card worth considering.
I'm never a fan of
Tendrils of Agony in commander.
The
Aetherflux Reservoir also look pretty weak win condition, you already have the
Thassa's Oracle along with quite a few other infinites for damage, so honestly just unnecessary.
Just cut
Boros Signet,
Rakdos Signet,
Orzhov Signet,
Talisman of Conviction,
Talisman of Indulgence for the draw cards.
With the
Unwinding Clock you don't have many ways to use this other than
Shimmer Myr.
If you keep
Power Artifact then it might may to look at least one mana sink for these cards.
I'd recommend
Pull from Tomorrow,
Urza, Lord High Artificer,
Eldrazi Displacer.
Inventors' Fair is a must include. Just take out the
Bojuka Bog, too slow for cEDH.
At the moment you literally only have one out to a resolved
Collector Ouphe,
Stony Silence,
Null Rod,
Cursed Totem and that's
Cyclonic Rift.
That is just not enough, in cEDH games you are going to face these cards all the time.
When you have tutors in a deck, you want them to be as versatile as possible.
If they can get you an answer to cards that are hosing you, then your ability to deal with cards is increased.
Enlightened Tutor -
Seal of Cleansing,
Aura of Silence,
Oblivion Ring.
Spellseeker/
Mystical Tutor -
Abrade,
Chain of Vapor.
Underworld Breach is a must include as well. Its a better version of
Yawgmoth's Will in your deck. Look for
Lion's Eye Diamond to just keep getting mana, and then
Wheel of Fortune and
Windfall to keep refeuling until you get to a win condition.