The commanders could produce an effect which scaled with experience counters
Illustrated by John Tedrick Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Next to her designs, life seems like a pale imitation
The differences seem to be as follows: +2 Mausoleum Wanderer +1 Shacklegiest +2 Spell Queller +2 Lantern Bearer +4 Curious Obsession +4 Geistlight Snare +3 Adarkar Wastes +1 Otawara, Soaring City +2 Hall of Storm Giants +2 Mutavault +4 Hallowed Fountain +4 Hengegate Pathway +4 Seachrome Coast +4 Portable Hole +3 Slip out the Back +1 Deafening Silence +4 Wedding Announcement +1 Cemetery Illuminator -2 Remorseful Cleric -1 Selfless Spirit -4 Watcher of the Spheres -4 Empyrean Eagle -4 Spell Pierce -2 Glacial Fortress -4 Temple of Enlightenment -8 Island -7 Plains -1 Aether Gust -2 Silkwrap -2 Seal Away -2 Light of Hope -1 Devout Decree -3 Isolate Now, I get it, this looks like a lot of changes, but many of them are upgrading the mana base, and building a sideboard tuned for the current metagame, as the one in the challenger deck was made in 2021
Getting him out super fast is good practice, the idea of transforming him by turn 3-4, not sure how that will play out, or if it's worth waiting