First i'm impressed by the effort you put on the description of your deck.

From what I understand this deck totally depend on your commander to win, this deck would be a good match again the red Purphoros. Since instead of putting creature to make damage you are casting spell. It is the same mind-set behing it, but your version of it seem slower. But

The amount of counter spell in your deck can be very difficult for your opponent if they don't get strong or fast enought before your commander is in play and I think this factor is very important. The fact that you can slow your opponent before your can play your commander in the same time that you cast spell to get your commander faster could be very power full. Mystic Confluence would be good in there, I think.

One weakness of your deck seem, to came from the casting cost of your commander and the fact that you don't have a lot of cards (beside your lands) that give you color mana. I think that event sol ring or mana drain are optional since that they won't get your commander faster. I recommande Wayfarer's Bauble, this one here can help getting your commander one turn sooner.I also recommande Spell Swindle this one here don't make you draw but it can be a good option the turn before you can cast your commander, plus you can decide when you want to use your mana.

And finally I recommand Lightning Greaves for ultimate protection (totally optional since you got a lot of counter spell), now if you don't have counter spell in your hand or your ennemy is using an creature that have an ability to make damage, it won't affect your commander. The only option for your adversary is to use an wipe the board type of card just to remove your only creature (that can be fun to witness).

Mizzix of the Izmagnus can have a very powerfull synergie with your commander.

Yo philkillpro appreciate your insight.

This deck is built towards cEDH match ups, yes it does mainly require my commander to win because Nivvie himself is a two card combo with any of the Curiosity effects. It is supposed to be slow, we are a control combo deck, we are not rushing to win asap, it's built to out tempo and control the boardstate.

In regards to Mystic Confluence it comes in and out of the deck, the same can be said for Cryptic Command, Dig Through Time, and Treasure Cruise. It all depends on my current meta and how much it interacts with the game. Yes having triple pips on blue and red in the casting cost of the commander is a downside however Nivvie negates it by not being able to be countered as well as netting at least one card draw before anything happens to Niv. I also would like to think that I do have enough sources for mana as I have 10 extra ways of producing color mana aside from my lands. In the part of also for Mana Drain and Sol Ring, they are damn good cards. It's not used for casting Nivvie faster as I mentioned earlier above, it's to out tempo your opponents. Not to mention there are certain tricks you can do like for example using Frantic Search with the excess colorless mana to untap your lands to accelerate into Nivvie faster.

As to Wayfarer's Bauble, Spell Swindle, and Lightning Greaves. The latter is a maybe, you don't want to tap out in a flash hulk meta but it does ramp so I'll take it into consideration. Spell Swindle is too slow and chances are Swindle itself will get countered, free cast spells are your best bet. For the former, our combo itself relies on having enchanted Nivvie with a Curiosity effect, with the low creature count we have, chances are there is no other creatures to equip when we decide to enchant Nivvie making it no bueno to give Nivvie Shroud.

For Mizzix it does no good in this current build and the casting cost is too high. Thanks again for your insight~

Hello,

big fan of this deck & primer. Why Mana Vault when you have only Stranglehold and Treasonous Ogre that have 3 in their mana cost? Also is Mox Opal a bit dead draw if you don't have enough artifacts onboard? Just curious :) Also what do you think about Torpor Orb in this deck now with Thassa's Oracle out there? Thank you for your time!

Sup Nazaxed, glad ya like Nivvie!~

It's funny ya actually ask about those two specific cards as I have just recently added them in about two days ago. I see potential in Mana Vault when bursting out a lot more artifacts or having that Cyclonic Rift mana open on T3-5. I am still half and half on Mox Opal as I am still testing it out, it was dead in one of my hands in one game but the other games I surprisingly had 3 artifacts on the board usually.

In regards to Torpor Orb, I have been thinking a lot of adding it in. It only shuts down two of my cards and highly worth it so it will probably come in when I see a card that I don't like rn. The only issue I have with this current build is the lack of library reshuffle, at max I would have to do 120 to the table and my only way is Winds of Change. I been thinking of adding back in Mission Briefing and Snapcaster Mage as additional ways to recast Winds of Change. The other alternative thoughts that a friend recommend to me is adding in Thassa's Oracle and Jace, Wielder of Mysteries. So not too sure what to do.

I really like philkillpros ideas. Great suggestions! Took the words right out of my mouth!

makespellswindlegreatagain!