This is a grindy artifact-mirror-ish matchup where Urza's Saga and Eldrazi Temple give them huge mana advantages, but our clock with Colossus Hammer and Puresteel Paladin is faster. Sanctifier en-Vec exiles black/red cards from graveyards on entry, which hampers nothing of theirs directly but is mostly brought in as a resilient 2/2 body that dodges their Dismember (protection from black); it's primarily a beater here. Pithing Needle can name Urza's Saga to shut off their Construct-making ability (it will shut off ours too, since we also run Urza's Saga, and the Saga's mana ability keeps working), or name Basking Broodscale to stop its adapt ability if that becomes a problem. We trim Paradise Mantle and Shadowspear since they're low-impact against a deck that isn't racing us on damage, and Forge Anew is a slow value piece we don't need when we just want to resolve Hammer and swing.

Pithing Needle is excellent here: naming Basking Broodscale shuts off its Adapt 1 activated ability, which is the engine that creates Eldrazi Spawn tokens and feeds the Blade of the Bloodchief loop, effectively neutering their combo outright. Kaldra Compleat comes in as a resilient, game-ending Equipment that dodges their artifact removal suite (Nature's Claim, Dismember targets creatures not artifacts) less reliably than Needle but still adds pressure if the game goes long. We trim the lowest-impact equipment (Paradise Mantle, Shadowspear) since this matchup is about disrupting their engine and racing, not incremental mana or lifelink. Keep Metallic Rebuke in to counter their key combo pieces like Blade of the Bloodchief or Devourer of Destiny on the stack.

Sanctifier en-Vec has protection from red, making it immune to Lightning Bolt, Lava Dart, and Unholy Heat, and its entry trigger exiling red cards from graveyards cuts off Lava Dart's flashback and any delirium-adjacent graveyard plans, while also being a solid blocker/attacker against their aggressive red creatures. Pithing Needle can shut down Cori-Steel Cutter's equip or just sit on a problematic recurring ability if needed. Ornithopters are too small and slow to matter in a race against a deck full of 1-2 mana burn spells and fast creatures, so they come out in favor of proactive, protected bodies. Meticulous Archive enters tapped and we want to minimize tempo loss against their fast clock.