Barrowgoyf is a huge, resilient lifelink/deathtouch threat that dodges Fatal Push and grinds past Murktide Regent while racing their clock back. Force of Vigor comes in to blow up Mox Diamond, Urza's Saga constructs are not relevant here but the free mode punishes any artifact-based mana or equipment they bring in, and it can be cast for free off a green card to ambush a key turn even when tapped out from Daze/Force of Will. Nihil Spellbomb and Pithing Needle are low-impact since this opponent has no meaningful graveyard plan or activated ability worth naming, and Skateboard is too small to matter against a deck full of free counters and efficient removal. Keep Thoughtseize, Fatal Push, and Wasteland at full count since discard and cheap removal are premium against their low curve, and Wasteland mirrors their own land disruption plan.