Phyrexian Furnace can exile cards from their graveyard to disrupt Psychatog's card-exile cost for pumping, slowing down their primary win condition, and cantrips into a card draw when no longer useful. Sylvan Library is a liability against a deck full of cheap counterspells and card selection (Counterspell, Circular Logic, Foil) since you can't afford to pay life freely while also being disrupted. The rest of our maindeck plan — Swords to Plowshares on Psychatog, Wasteland on their Polluted Delta-fetched lands, and the Survival of the Fittest engine — remains the core gameplan since they have no artifacts or enchantments worth bringing in more hate for.