Hi buddy. Nice looking deck. Have you thought about Necrotic Ooze ? I know you dont have that many activated abilities, but it's still a fun card. Combines well with Phyrexian Devourer and Triskelion . Potential win combo. Jarad's Orders could have a place in order to find these cards.

Lord of Extinction is also a fun card, though it has some combo issues with Scavenging Ooze .

I'll post more cards as I find them.

I guess I would suggest adding in more Reanimate cards like Victimize , Zombify , etc. Then I would add in cards like Lazav, Dimir Mastermind , Maelstrom Pulse , and Biomantic Mastery . If you want to get more cards into your graveyard, I would suggest adding in Entomb , Golgari Thug , Golgari Grave-Troll , etc. That mechanic in particular is great for a deck like this. Then you could add in more opponent mill cards like Consuming Aberration and the like.

Thanks for the suggestions everyone! Scavenging Ooze and Golgari Grave-Troll are already in the deck, but there are a lot of cards I will consider.

I'm still on the edge about adding more mill cards, as I don't want to make this into a mill deck, but more of a dredge deck. I have a few of the more powerful mill cards in here just to fill graveyards quickly.