Treachery for blood (Modern)

Turn 2 Agent of Treachery. Need I say more? Janky and a lot of fun. MTG is supposed to be fun. Right?

Perfect hand: Swamp, Island, Persist, Thought Scour, Stitcher's Supplier, 2 other things.
Turn 1: Swamp, Stitcher's Supplier (pray that you mill Agent of Treachery in your graveyard).
Turn 2: Any land, Persist, Agent of Treachery, Steal their stuff.
Turn 3: Rinse and repeat. Once you have Thassa, Deep-Dwelling it can get crazy.

I am currently planning on playing this in MTGO and in real-life tournaments. I will update it accordingly if I find new optimizations. My goal is to keep this as "budget" friendly as possible while still remaining competitive. If I find cheaper cards that do the same thing than I'll put those in. If ANYONE has suggestions on things like that please leave comments. It's unfortunate players are prevented from playing Modern more often because of expenses. Plus, it's also fun to crush $1000 decks with a measly $100 deck.

Update: 9/17/2021
Added in main board: Contingency plan, Unmarked grave, Taigam's scheme, and mirror mockery.

Added in sideboard: Void snare, and Void mirror.

Most of this update is to optimize getting Agent of Treachery in the graveyard, will also get some card draw. Also, Mirror Mockery is a neat card I'd like to see in play. Make some tokens of Agent of Treachery.

Update: 9/18/2021

Added in main board: Tomebound Lich, and Wishclaw Talisman.
I also removed 1 Ashiok, Nightmare Weaver, and 1 Blood for Bones.
Put some more counterspells on the sideboard rather than the mainboard.
The problem I am seeing is hand burn. Once you go through your hand you start to rely on top decking very quickly. Added Wishclaw Talisman to help get the cards we need.
Added: Asmoranomardicadaistinaculdacar, and The Underworld Cookbook (I've seen people be really scared of these two cards. Anytime I play them they try their best to get rid of them. You can use this to your advantage).

Playnote:
One hard counter to this deck is esper or azorius control. Anything that prevents you from playing your hand or specific cards is difficult. Especially if you get a bad first hand. There isn't a lot interaction outside of our combo.

Update: 9/20/2021

Removed: x2 Thought scour, watery grave, contingency plan.
Added:Ransack the lab, Archon of cruelty, and Choked Estuary, opt.
Reduced overall cost of deck, but added more creatures to reanimate.