I need help fixing the curve on my Andres deck, and there’s a lot to look through cause theft cards are Expensive

https://www.moxfield.com/decks/FowLnHXiDUCnqyye_W392Q

So I have a few cards that do basically the same thing, but also cost the same cmc wise, like the counters and Gissa and Draugr Necromancer. Should I keep both of them or just one?

Also I have a ton of cards that exile things to cast, and I have a bit of a breakdown for each one

Ruinous is on curve, and being random kinda doesn’t matter cause you just wanna steal everything as don, plus it drains. Till end of turn does help- but it’s only one.

P&N are keeps cause it’s free.

Stolen Strat is pretty good just cause it’s repeatable, it’s only during that turn though- but it’s also any mana so eh-

Mind’s Dilation is decent cause it works every turn but it’s also very expensive. I like it though

Arvinox and Brainstealer are ties, same CMC but I’m not sure- Arv is basically Theros god and it is any color as long as exiled, but the dragon drains for Anything you steal so I think that makes me lean more towards the dragon

Then I have my graveyard cards- which are kinda weird cause I didn’t intentionally zero in on graveyard strats. Geth is cool cause it’s reparable and kinda feeds itself but you do have to basically pay Extra to get whatever you want. Aberration does help feed and it does it repeatedly but it’s a bit expensive and is kinda a meh card cause I’m not hard focusing on graveyard stuff. The Pirate is okay, especially when considering that I have a few exile and play spells things in here so that can help get an extra cast but it’s not extremely required, but it’s cheap so it could stay. The dagger is nice if I keep grave stuff, and gives me more stolen creatures