Vandalblast with overload can wipe their entire artifact board at once, hitting their artifact lands. The Bridges (Drossforge, Mistvault and Silverbluff) are indestructible, so Vandalblast's destroy effect won't kill them. It still destroys Seat of the Synod, Vault of Whispers, Great Furnace, Myr Enforcer, Refurbished Familiar, Ichor Wellspring, and other nonland artifacts, which is devastating against their affinity-cost creatures. Nihil Spellbomb and Relic of Progenitus can exile their graveyard to shut off Blood Fountain recursion. They do nothing against Ichor Wellspring, which draws a card when it enters or is put into a graveyard from the battlefield and doesn't care about graveyard contents. Spell Pierce is weaker here since much of their deck is cheap artifacts that dodge the tax easily, so we trim it for more proactive artifact hate. Keep the rest of our removal suite (Cast Down, Cut Down, Snuff Out) intact, but know its limits. Snuff Out can't hit the black Refurbished Familiar, and Cut Down only reaches creatures with total power and toughness of 5 or less, so it misses Utrom Monitor and Myr Enforcer. Cast Down is our most flexible answer.