Infinite colored manaInfinite colorless manaInfinite creature ETBInfinite creature LTBInfinite magecraft triggersInfinite Map tokensInfinite storm countInfinite +1/+1 counters on creatures you control
How it works
Cast Journey On either from your hand or from the command zone by paying 1 and commander tax, if applicable, creating at least three Map artifact tokens and exiling Journey On with the ability to cast it from exile.
Activate Krark-Clan Ironworks by sacrificing three Maps, adding six C.
Cast Kellan from exile by paying 2.
Activate Meticulous Excavation by paying 3, returning Kellan from the battlefield to your hand.
Repeat.
If you have at least three opponents who each control an artifact, once you have infinite mana, you may forego sacrificing the Maps, and you may use the Maps to put infinite +1/+1 counters on creatures you control.
This intricate loop sets up an engine to generate infinite mana and storm count by leveraging the Map tokens created when you cast Journey On. By feeding those tokens into Krark-Clan Ironworks, you generate the colorless mana needed to continuously recast Kellan, Daring Traveler from exile and bounce him back to your hand using Meticulous Excavation. Meanwhile, Chromatic Orrery ensures that all your newly generated mana can be filtered into any color you need to keep the engine running smoothly. Once you've achieved infinite repetitions, those same Map tokens can be utilized to pump infinite +1/+1 counters onto your creatures, securing total dominance of the board.