Mutagenic agents are extremely volatile chemical substances that alter genetic material in random ways.

Most biological organisms die after being exposed to mutagenic agents. Only the Zerg have ever been able to use these compounds to their full potential. Once combined with Xel'Naga evolutionary crystals, they can use mutagenic agents to splice old strains into newer more powerful forms.


  • Zerg units that have already morphed can mutate into another strain of a different branch (i.e. Zergling - alternates between Raptor or Swarmling)
  • Two units of different strains can merge like Protoss Archons and use the combined abilities and attacks of both

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