That mean this is casting from exile for those Commanders like Prosper
As a result, Commander releases are more similar to Standard-legal set releases than to other supplemental products, in that it's pretty much impossible for a Commander deck to have a positive expected value over the long term
Izzet Phoenix 4 Fiery Impulse 4 Riverglide Pathway 4 Spirebluff Canal 4 Steam Vents 4 Treasure Cruise 4 Picklock Prankster 4 Arclight Phoenix 4 Consider 4 Ledger Shredder 4 Sleight of Hand 4 Opt 4 Lightning Axe 3 Island 2 Hall of Storm Giants 2 Spell Pierce 1 Otawara, Soaring City 1 Stormcarved Coast 1 Galvanic Iteration 1 Temporal Trespass 1 Proft's Eidetic Memory 3 Mystical Dispute 2 Brotherhood's End 2 Crackling Drake 2 Young Pyromancer 2 Thing in the Ice 1 Ashiok, Dream Render 1 Negate 1 Brazen Borrower 1 Aether Gust Izzet Phoenix, with a 14.8% share of the winner's metagame, is the obvious deck to beat in Pioneer after the bans
Koma, Cosmos Serpent is a great card, and makes Koma's Coil tokens every upkeep
While most likely to see play in cEDH, Ive seen enough shenanigans with cards like Enduring Renewal to respect the combo potential Wild Cantor brings to the table too