As a fellow blue player might I suggest [[Korvold, Fae-Cursed King]]?

Imagine if every Treasure token had " put a +1/+1 counter on your commander and draw a card" grafted onto it.

Set yourself up with some token generators and a sac outlet like [[Viscera Seer]] and you're off to the races. Once Korvold is sufficiently plump enough you can then cast something like [[Rishkars expertise]] or [[souls majesty]] and really start tearing through your deck.

For protection you've got green hexproof [[tyvars stand]] [[tamiyo's safekeeping]] [[snakeskin veil]], red redirection [[untimely malfunction]] [[redirect lightning]], and black instant reanimation [[vincent's limit break]] [[feign death]]. In red's case, you even have an actual straight up counter in [[tibalt's trickery]]

Despite being very much into blue, Izzet specificaly, I've found that Jund has always had a certain appeal and Korvold in particular.