This is a five color control deck that looks to generate card advantage and close games out with it’s namesake card Niv-Mizzet Reborn.
Companion
1
Yorion, Sky Nomad
Creatures (28)
2
Hydroid Krasis
2
Lotus Cobra
4
Paradise Druid
2
Voltaic Brawler
2
Knight of Autumn
4
Rogue Refiner
4
Whirler Virtuoso
4
Niv-Mizzet Reborn
1
The Scarab God
1
Tolsimir, Friend to Wolves
2
Yorion, Sky Nomad
Spells (14)
4
Attune with Aether
4
Ephemerate
4
Lightning Helix
2
Kolaghan's Command
Enchantments (2)
2
Klothys, God of Destiny
Lands (36)
4
Aether Hub
2
Ancient Ziggurat
3
Branchloft Pathway
4
Breeding Pool
4
Fabled Passage
3
Forest
2
Island
1
Mountain
3
Plains
2
Sacred Foundry
1
Swamp
4
Temple Garden
3
The World Tree
Cards (80)
Sideboard (14)
4
Dovin's Veto
2
Meddling Mage
2
Deputy of Detention
1
Kambal, Consul of Allocation
2
Klothys, God of Destiny
2
Elite Guardmage
1
Polukranos, Unchained