I like this build! It's got a nice mix of unbalanced-in-your-favor stax effects and traditional mardu goodstuff.

If Thornbite Staff isn't part of an infinite combo, I would take it out in favor of Recruiter of the Guard or Imperial Recruiter. You could also take out Night's Whisper, unless this is meant to be dual commander, and maybe Unburial Rites since you can't search for it and you don't have many creatures. To make room for some of the other cards you want!

Thornbite Staff was in to potentially machinegun down creatures, but I do think I have enough removal to counterplay them already. I'll test replacing it with something like Altar of Dementia.

Buried Alive can only tutor creature cards, so you can't get the bloodbond combo with it

Yes, so I've realized. It's already been taken out in place of a Worldgorger-Doomsday package.