Replace 2 Swamps with Swarmyard for free rat regeneration.
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You Simply can't play Vigor here since whenever any of the Elemental Incarnations in put into a Graveyard from ANYWHERE they get shuffled back into the dead thus killing off the main idea of this deck.
Surgespanner's in primarily to reduce the impact your opponent can have on the board. The primary win condition is either the infinite turns route via Summon The School and Wanderwine Prophets or Milling the opponent to death. In testing i've won more by Milling than actual damage so Its become more of a StallMill Merfolk deck.