I use Mogis's Marauder for a haste option and Thornbite Staff for an infinite amount of rat tokens. Not always the win-con but an option if I need it.

I love random, obscure tribals. My input would be that both Dictate of Erebos and Grave Pact are better than Butcher of Malakir . If you want more death triggers you can consider Blood Artist , Zulaport Cutthroat , Falkenrath Noble , Vindictive Vampire , ect, ect.

Also, Torgaar, Famine Incarnate seems weak when things like Scytheclaw , Quietus Spike , Virtus the Veiled , and other things that half life totals exist.

I have a take on Relentless/Marrow-Gnawer on my profile, take a look. Maybe it'll give you an idea or two.

Cabal Coffers for ramp

How do you deal with artifacts and enchantments? Oblivion Stone , Nevinyrral's Disk , Ratchet Bomb , Lux Cannon , Blast Zone , Ugin, the Spirit Dragon and Karn Liberated all come to mind.

Imp's Mischief is "counters" counterspells, redirects removal and some extra turn cards. More importantly, no one expects it from black.

I got some ideas for cuts if you're interested, lmk.

Mercuteio

I see you want cut ideas based on your comment on my wall. As such....

Butcher of Malakir - Too expensive to be impactful. Would rather have Grave Pact or Dictate of Erebos if you still wanted to keep it

Gnat Miser - Weak static effect and doesn't do much other than being a tekashi69 (a rat :P)

Sinuous Vermin - Being or not being a monsterous, it is weak. Not worth a slot.

Swarm of Rats - Potentially big dude with no trample, you already have 1 or 2 of these, redundancy is not needed. I don't even think the others are. They seem win-more.

Typhoid Rats - Is cute, but 1/1 deathtouch with no way to abuse is ripe for cutting.

Bad Moon - Definition of win-more. Anthem helps opponents too, weak static effect. Not worth it at all.

Gravepurge - Eh, there is much better recursion in black if you are so inclined.

Cast Down - Meta dependent, but I would go with Go for the Throat

You could add in some more relentless rats or some of the suggestions I recommended.

Coffers is the primary card you should add if you can, SO much ramp. But I'm biased because I have a deck based on it. Nykthos, Shrine to Nyx would help you ramp out alot too!

Reply here instead of on my wall so I can keep track of everything :)

Profet93 Good suggestions, thank you! I'd love to add Cabal Coffers but it is out of my price range sadly. I agree it's amazing but it's just too much.

Mercuteio, Cabal Stronghold is a decent budget option if Cabal Coffers isn't doable.

potentiallygood Good alternate suggestion! I added it to the deck

Mercuteio

+1 I saw you liked my comment and took to heart the changes I recommended, I am happy I was able to help. Idk if you are still looking for suggestions but I would cut the entire infect package. You don't have enough to abuse it and it sucks getting them to 9 poison. Moreover, it paints a bigger target on your back. If you had a big creature for Tainted Strike I would say keep tainted but even that is weak here.

where is your artifact and enchantment hate?!

Potential additions....

Nykthos, Shrine to Nyx - With all your rats, this will be crazy. Maybe even more mana than coffers

Rings of Brighthearth - Copy your commander ability. When you decide to add fetchlands, it can copy those. It synergizes with....

1. Your commander (main purpose)
2. Ayara
3. Liliana
4. Piper
5. Altar
6. Aetherflux
7. Thornbite

Another reason I like rings is because when you add Cabal Coffers + Deserted Temple (when you get $), you make infinite black mana

Sensei's Divining Top - Synergizes with rings to draw as much as you have mana. Add in a Basalt Monolith (if you like combos) to do Rings + Basalt + Top = Infinite colorless mana and draw your deck.