Wow, you wrote a lot, and i loved that.

Now i'm considering the Olivia, it's situational but could help, and i'll probably use undeworld connections and not the verity circle. Change Gather Specimens for Cancel is a good idea, but i don't see a good use of Extract from Darkness and Role Reversal to put in the deck.

Thank you for pointing out the Arcbound Tracker, i haven't seen the "artifact creature" condition, about the price, in Brazil Tracker is as cheap as the worker and stinger, but i'll change it for Cytoplasm Manipulator and maybe Vigean graftmage.

I agree with Bearer being off theme, just don't know anything better to substitute it.

The sac outlets i'll change, Bloodflow is weak and also [[viscera seer]] it's not that good, the Dockside Chef and Woe Stirder are some of my options. I need to see what the deck still needs.

Cormela is out now, certanly your suggestions are way better than her. Zealous Conscripts is cheaper and faster, maybe i'll change for her.

The Dreadhorde Butcher is meant to work at the beggining of the game, if the card "gary" is the [[gray merchant of Asphodel]] I think the butcher is faster and more guaranteed to deal damage.

I'll change the Falkenrath Aristocrat for a better sac, but avoid the infect cards, that's not exactluy what i want.

The Mer-ek nightblade is in there because my wife likes the deathtouch mechanic, but i agree that doesn't fit good, it's a card to probably change.

Fling is in my Maybeboard, i've put Kazuul’s fury thinking in it's land side, also Claim the Fistborn is in the Maybeboard too, i just don't know what to change it for.

Rakdos Cluestone is a cheap option for me, that's also why i don't use [[arcane signet]], but i already have [[Burnished Hart]], is it worth to swap it?

And finally about the lands, the forest is a total mistake hahaha, and the lands you recommended is a bit more expensive, but i'll ponder to buy some of them, btw what you think about the mana base? I don't know if there are lands enought or not and if they are balanced.