lightning_elf the reason that you want the rocks are various!

1: The more powerful a deck is mechanically, the more access it will need to an abundance of mana. If you increase the power of the deck via card selection without fixing it's mana, it will not perform. This is something I stand behind for brewing in general, but especially in decks that are 3+ colors.

2: They make tokens that can either be used for sheer boardstate presence or for even more mana via your Commander! It's just a crazy amount of gas, gotta have it.

My eyes see a lot of fat that could be trimmed, but let me ask you a counter question: Which cards from this list are absolutely essential for your playstyle preference?

Unmarked Grave seems like an auto-include here imho

Consider more artifact stax that don't effect you, like Cursed Totem & Grafdigger's Cage!

Crap, I forgot to mention Final-Word Phantom. Super good here.

This Sultai Commander is such a banger.

I'm seeing a lot of fantastic options here already like Thada Adel, Acquisitor, Grazilaxx, Illithid Scholar & Old Gnawbone! Right on.

What directions have you considered as far as the continued development of the list is concerned? Slimming down into a reanimator strategy so that you can more heavily leverage the real bangers like Old Gnawbone & Ancient Silver Dragon will make the deck way more flexible and consistent imho. You don't need to jam all of the triggers, just the right ones. This approach will also allow you to make more room for the essentials: ramp, draw & tutors!

Consider Malevolent Hermit  ^Flip, Mausoleum Secrets & Necrotic Ooze!

Crap, I forgot to mention how fantastic Burning Inquiry is here! 0% downside. Don't sleep!

Hey man! As someone who's brewed this one alot, I'm telling you right now you need waaay more mana rocks. Literally like 10+ rocks, plus a few rituals. The fact that they also generate a token is incredible in practice. Here's a list of the ones I'd include on top of what you already have: Fellwar Stone, Talisman of Progress, Izzet Signet, Boros Signet, Azorius Signet, Springleaf Drum, Jeweled Amulet, Lotus Petal, Pyretic Ritual, Desperate Ritual, Seething Song & Battle Hymn.

Also just so you know, Mystical Tutor, Personal Tutor, Enlightened Tutor & Gamble are all super cheap right now due to recent reprints! Gotta get it while the getting is good, ya know?

A great combo here is Isochron Scepter + Dramatic Reversal, it generates infinite Spirit tokens on top of just being great individual utility pieces for the build outside of the combo!

Lots of great, cheap synergy pieces like Wild Research, Kindred Discovery, Opposition, Vicious Shadows, etc...

I'll stop rambling now, great Commander choice dude! Let me know how you feel about my mediocre suggestions lol.