This WUR build carries Avengers Disassembled, which can deal 3 damage to each creature and/or destroy a target land, so don't expect Eumidian Terrabotanist to survive that wipe — it's brought in purely for the steady landfall lifegain that offsets their noncreature-spell damage from Thor, God of Thunder, not as sweeper insurance. Pawpatch Formation is the key add, since it destroys Thor outright as a flying creature before it can start pinging you off noncreature spells they cast. Cut the extra fetch-land and a couple of Meltstrider's Resolve, since their removal (Combustion Technique, Firebending Lesson) is efficient enough that committing extra mana to fights is inefficient. Play around counterspells like Spell Snare and Flashfreeze on 2-mana or green plays when they have mana up.