Doubling a creatures power is no joke, and the ability to do it multiple times off multiple landfall triggers is heinous
In the early days we don't have that many options - Terror, Dark Banishing and then the sweeping removal of Hellfire
While he's not broken by any means, I do like him as a solid card to put in when Jace, the Mind Sculptor is a little pricey
Quest of Wonders opens with Shanzay, an Illumineer from our world, coming across an old lorebook
Commanders Tawnos, Urza's Apprentice is a pretty sweet commander, but this deck lacks the artifacts to properly support it
But I wouldnt be embarrassed to hand this deck to a new player to teach them the ropes