Grixis Reanimator uses Faithless Looting and Thought Scour to fill the graveyard quickly, then Persist or Emperor of Bones to reanimate Archon of Cruelty, while Psychic Frog and Abhorrent Oculus provide resilient midrange pressure. Your Endurance is a critical mainboard trump, as casting it in response to Persist or Emperor of Bones exiles their entire graveyard and removes the reanimation target. Mystical Dispute is extremely efficient here against their blue interaction — countering Spell Pierce, Sink into Stupor, and their own Mystical Disputes — and comes in as a low-cost counterspell in what becomes a counter-heavy post-board game. Force of Vigor answers Emperor of Bones and Abhorrent Oculus's token artifacts, providing free artifact removal against their creature-artifact threats. Harbinger of the Seas does little against their basic-heavy manabase, and Birthing Ritual is too slow compared to the value their graveyard generates.