Old temur reclamation meets Yorion.

We have ramp in Risen Reef , Uro, Titan of Nature's Wrath,Growth Spiral and the big one Nyxbloom Ancient that can be cheated into play with Lukka, Coppercoat Outcast sacrificing a 3 cmc creature.

Lutri, the Spellchaser isn't part of the deck because it doesn't work on Yorion's etb, Lutri needs to be casted, consistency i see, poor otter.

Scorching Dragonfire is for Lurrus decks etc, it can be changed with other removals, like Omen of the Forge.

Omen of the Sea helps us finding what we need, 4th copy is an option, another option is to change it with a 3 cmc creature, draw on etb are appreciated.

Wilderness Reclamation untaps our lands at the end of our turn, that is important in many situations for attack or defencive purpose. Deck may benefit from Fires of Invention, listed as option, but it may limit us.

Expansion // Explosion and Electrodominance are the finishers. Electrodominance secondary effect doesn't work when opponent has Teferi, Time Raveler and we cannot use it for creatures when Grafdigger's Cage is on the board. Expansion part of Expansion // Explosion is a copy effect, it doesn't work if cmc is bigger than 4, so no Electrodominance with x bigger than 2, but it works with Storm's Wrath, Growth Spiral, Mystical Dispute etc.

Tamiyo, Collector of Tales helps us findind stuff, filling our graveyard for Uro, Titan of Nature's Wrath and reusing cards. Passive isn't bad at all, but Tamiyo tends to be removed quickly.

Side

Klothys, God of Destiny and Soul-Guide Lantern as graveyard hate.

Narset, Parter of Veils as drawing hate, mostly effective vs cycling decks.

Mythos of Illuna to copy big or useful permanents, they may be our or opp's, useful vs Elspeth Conquers Death, Agent of Treachery, big creatures, missing land drop etc.

Repudiate // Replicate vs many abilities like etbs, it is strong vs Yorion, Sky Nomad return at the end step's ability.

Shark Typhoon vs flash, add more if you like it or hate flash so much, remember btw that many spells are creatures.

Aether Gust vs red and/or green spell and permanents, Nissa, Who Shakes the World doesn't seem so hot atm but Zenith Flare is (yup), mono red is still a thing, grull is rising, temur clover is still around, Winota is still alive somewhere etc.

Mystical Dispute vs blue, especially that pesky Teferi, Time Raveler.