Spirit Woods
Requirements:
Gliding - If most people have gliding you can most likely still get the raid done but its better to have it than not.
Helpful but not required:
Mesmer's, Scourges and thieves can all bring portal skills to aid with moving between Spectral Rifts.
Stability skills - Your healers should have these but extra never hurt.
Mobility Skills - to move quickly between Spectral Rifts.
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