With most Affinity lists being more of the Grixis variety, it's likely this won't find a home in current lists, but we may see new variations of the archetype appear
If not, leave it to the pros
Now I'm not sure what Black is doing here
Although I cannot confirm my theory, everything below is based on research
Dont forget to check the websites of local card shops, too
Good sacrifice targets usually fit one of these categories: Enters value: creatures like Solemn Simulacrum or Elvish Visionary that already replaced part of their cost Dies value: creatures with death triggers, recursion, or graveyard payoffs Mana value 3 or 4 creatures: these create the best early Emerge curve Artifact fodder for Emerge from artifact: eggs, Wellsprings, Clues, Blood tokens, and similar pieces Recursive creatures: threats that come back from graveyard or exile Creatures you wanted in the graveyard anyway: because some decks treat the graveyard like a second hand with worse lighting The practical sweet spot is often mana value 3 or 4