I know it probably would hinder the battle plan more than help but what about Malefic Scythe ?

I also thought about Scythe at first but then I realized that I focus on lifedrain more than attacking, and Scythe is kinda slow. I want to start my sac engine as soon as possible.

But still, thanks for the suggestion)))

This is a cool list! The only thing I would add are MDFCs/Utility Lands. Agadeem's Awakening  ^Flip seems like a no brainer, and Castle Locthwain seem pretty free as well. Have you tried out Ayara, First of Locthwain ? I've found her to be solid splitting with Vito. She still does the drain game while also providing another sac outlet that can drawn some cards. I could also see A couple Malakir Rebirth  ^Flip being reasonable, but for those I would trim spells so we could get the land count up to 25. Having a few more lands than you think you need is going to become important in historic with stone rain coming to the format soon. If we want to bring the curve up Gray Merchant of Asphodel is a really nice 1-2 punch with Vito.

Here's what I would do: -1 Vito, -2 Call, -6 Swamps,

+2 Ayara, +4 Agadeem's, +3 Castle.

Looking forward to bringing a version of this to the ladder!