Phyrexian Furnace is a fine graveyard answer here: its tap ability exiles the bottom card of their graveyard each turn. That is only one card at a time, and you don't choose which, so it won't stop a full Hermit Druid dump. Its sacrifice ability is the precise tool: for {1} you exile a chosen card from a graveyard and draw a card, which lets you snipe a reanimation target for Animate Dead, Unearth, or Karmic Guide, or remove the top card of their graveyard that Volrath's Shapeshifter would copy. Uktabi Orangutan has real targets in this matchup: its enter trigger destroys target artifact, and Triskelion and Phyrexian Devourer are both artifact creatures. It is a narrow answer with few targets, so treat it as a 2/2 body when neither is out. It cannot hit Reflecting Pool, which is a land, not an artifact. Sylvan Library comes out because it is a slow card-selection engine that does nothing to the board against a deck that can win quickly, and using its extra draws costs life. Squee is the other cut, since it does little against their plan. Keep Wasteland active, because all of their lands are nonbasic, including City of Brass, Gemstone Mine, Reflecting Pool, Treva's Ruins, and the pain and bounce lands.