Type cycling Scourge had introduced basic land cycling, where you could cycle your cards and instead of getting a random card, you searched your library for a specific basic land
Its like a Vengeful Bloodwitch that stores up all its damage for one go and controls the board
Start with the color-specific staples aboveSwords to Plowshares for white, Pongify for blue, Deadly Rollick for black, Chaos Warp for red, and Beast Within for greenthen adjust based on your local meta and the permanents you see most often on the table
Orzhov is overflowing with excellent reanimation spells: Unburial Rites, Dread Return, and Exhume are classics, and The Cauldron of Eternity and Debtors Knell will allow you to reanimate creatures repeatedly over multiple turns
For Diabolic Convergence, each legendary permanent you control will reduce the cost of the spell
Whenever an opponent discards a land card, add BB to your mana pool