For starters, having a scaling, instant-speed draw spell that also comes with a scaling Flying body attached is excellent stuff
Blue Ice Magic (decent) Ice Magic is basically Unsummon, Griptide, and a weird 8-mana removal spell all at once
That said, I wouldnt underestimate the hexproof that Surge of Salvation gives to the player who casts it
Podcasts, websites, and YouTube channels focus on Commander deck breakdown
His ability to ready up again twice per turn when chosen for an action or an item's ability seems fairly good to me as well, with a high ceiling for shenanigans, from my initial impressions at least
Even if it your favorite card in the world, sometimes the one deck you'd play it in best supports two or three copies, not four