I would guess its a common sideboard card and a great argument for moving towards a build of Saheeli with a diverse mix of backup plans
Exquisite Blood Epicure of Blood What do I need to start this combo
We get a smattering every so often, with effects like Tormod, the Desecrator and Syr Konrad, the Grim
Blue-Black: Artifact Bleeder The blue-black archetype in Aetherdrift shares white-blues affinity for artifacts, but instead of using them to outvalue opponents, it slowly drains them dry
Kemba, Kha Regent [Cat]: Really strong in a cat-equipment deck
Within the limited realm of Fallout cards, its a powerful card, as there are a lot of counter mechanics at play in the limited set: energy counters, rad counters, +1/+1 counters (especially from Monstrous creatures), muster counters, and more