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If you're running Jeleva as your general I'd add Lim-Dul's Vault in a heartbeat, you can stack the top of your deck to make sure you hit awesome spells off of Jeleva. I would also add Army of the Damned from your maybe board to main deck, 26 power and more if you can double it with something is pretty awesome. Also recastable from the graveyard!
For cuts, getting rid of spells with X in the cost would probably be a good idea since you can't pay for them with Jeleva. Annihilate also seems pretty lackluster.
I got a chance to play with the edits I did and you're right about the X spells, definitely couldn't utilize them as much. I'm definitely putting in Lim-Dul's Vault and Army of the Damned and taking out Annihilate since I have Doom Blade Go for the Throat and Terminate and those are way easier to copy and I didn't like Infest that much so i'll take that out too.