Grixis Affinity is almost entirely artifact-based, from Myr Enforcer and Refurbished Familiar's affinity cost reduction to Ichor Wellspring and their artifact-land manabase (Drossforge Bridge, Mistvault Bridge, Seat of the Synod, Vault of Whispers), making Dust to Dust extremely efficient at exiling two key pieces at once, though note the indestructible Bridge lands can still be exiled by Dust to Dust since exile ignores indestructible. Vandalblast overloaded can similarly wreck their board and nonland artifacts, though it won't hit their indestructible Bridge lands since Vandalblast destroys rather than exiles. We cut Prismatic Strands since their damage comes from a mix of sources (Galvanic Blast is red, Refurbished Familiar is black, Utrom Monitor is blue, and Myr Enforcer is colorless), so naming a single color stops only part of it and can't stop colorless damage at all. We also trim Melded Moxite for more proactive interaction. Our own Dispatch and Lightning Bolt remain excellent against their cheap artifact creatures, so keep the removal suite intact to race their fast curve.