Priest of Fell Rites is an interesting card from Modern Horizons 2 that supports a reanimator strategy.
The front side of the Human Warlock is a 2/2 for 2 that can "cast" a large reanimate spell, albeit with summoning sickness. Your opponent will certainly see this as a "must kill on sight" 2-drop.
Priest of Fell Rites obviously pairs well with another new card from MH2, Unmarked Grave. Not only can Unmarked Grave put your reanimation target in the bin, if you need to you can just put Priest of Fell Rites in the graveyard and use its unearth ability. This interaction alone might be enough to justify the inclusion of Priest of Fell Rites in your deck even if you don't think you can rely on it on its front end.
Is it possible that we are going to have access to Anger in Modern? As of right now Wonder has already been spoiled in MH2. Anger would be a perfect fit, as the Priest would receive haste to activate and the reanimated fatty would be able to attack right away. We'll just have to wait and see!