wiling to take this to my next game day, anyb advice on what to replace and what to add?

i'm definitly going to add 4 stasis snare and sideboard ob nixilis

i feel tho that i might not have enough bounce/return/sac for my own demonic pact if needed but i'm not sure.

edit: added the deck to how i think it's final form will be, the only thing i'm not sure of is to maybe add either add more removal or more duress/transgress into the side instead of dead weight/gilt-leaf

edit2 : removed ultimate prices and narset and added 2 sinister concoctions and 2 sigils. starting to doubt kalitas even

Don't forget to +1 if you like it! :)