Terrageddon's Armageddon plan destroys every land on the battlefield, so you can't count on any of your lands afterward, and that includes Mishra's Factory and Faerie Conclave. Treat those manlands as early pressure or blockers before the wipe, not as threats that outlast it. The extra Disenchant gives one more out to strip Sylvan Library or an early Mox Diamond, improving consistency against their acceleration. Phyrexian Furnace is slow here, since it can only exile one card at a time and does little to stop Terravore from growing off the lands in graveyards, so cut the one copy. Keep Swords to Plowshares for Terravore and Wrath of God to answer Call of the Herd tokens or Werebear before an Armageddon locks the board, and hold Counterspell for the Armageddon itself when possible.