Terrageddon plans to blow up all lands with Armageddon after building a board/land advantage, so countermagic for small spells is less valuable than resilient threats and removal; cut a Counterspell and a Mana Leak for Exalted Angel, a sizable flier that gains life and survives post-Armageddon better than most of their Treetop Village/Mishra's Factory manlands. Keep Swords to Plowshares to answer Terravore and Wild Mongrel cheaply, and Wrath of God to reset the board before an Armageddon locks things in their favor. Decree of Justice is excellent since tokens survive Armageddon with mana already spent.