Boros Moxite builds an artifact-heavy board with Melded Moxite, Ragged Short Spear, and artifact lands like Ancient Den and Great Furnace to enable metalcraft on Dispatch and Galvanic Blast, so Gorilla Shaman is useful both as a cheap body and as removal for a Melded Moxite or an artifact land to deny their metalcraft threshold. Relic of Progenitus provides incidental graveyard disruption against Pursue the Past's flashback, though it's a secondary effect; its second ability exiles all graveyards, which also stops Sneaky Snacker from coming back from the graveyard when they draw their third card in a turn. Since Dispatch can exile our creatures under metalcraft, try to play around having only one key threat exposed and race before they set up their artifact board. Trim weaker filler for these proactive disruption pieces.