MEPHISTO666

burglar rats > ravenous rats, since it don't target enemy, avoiding of possible player hexproof and for multiple enemies.
I run a discard deck too, take a look: https://www.mtgvault.com/mephisto666/decks/your-hand-is-gone/

foundry street denizen works great with krenko

Battle Hymn would be fun for creatures like Skitter of Lizards and Pyre Charger

lighting bolt and where's the other krenko? double krenko is sick

with channeler initiate ability you can use the scorpion god
I'm working on a deck using this hapatra and nest of scarabs too

Vizkopa Guildmage can be great for additional damage

killing your own creatures can be dangerous, unless you create tokens.
Mortician beetle can be more useful than carrion feeder since you don't have to sacrifice for him
Take a look in these cards: agent of the fates, priest of the forgotten gods

Vizkopa Guildmage would be really nice

Vizkopa Guildmage would be really good
Disenchant is for a sideboard

harsh scrutiny may be better than duress.
I run a similar deck (https://www.mtgvault.com/mephisto666/decks/your-hand-is-gone/) but with more creatures as champ blockers and benefiting from the discard.