I essentially want to build a low-ish curve deck that treats the graveyard like a revolving door. Maybe with some sac effects like Phyrexian Altar and Mind Slash. I definitely also just want an excuse to run Eerie Ultimatum lol.
Any suggestions on staples or "must-haves" would be very much appreciated!
Golgari Grave Troll and Life From the Loam are staples for a graveyard-based deck. Ashen Rider is a nasty option for Karador to be running. Skullclamp of course, and Greater Good. I had a lot of fun with a Karador spirit tribal deck a while back, and now I'm thinking about a Karador Squirrel tribal deck. Deranged Hermit and Deep Forest Hermit seem like awesome options in such a deck.
Elementals with evoke costs can be good too. Shriekmaw and Wispmare for example. Reveillark combos off with a sac engine and Karmic Guide if you want to be 'that guy' it can be good but it's pretty old news.