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Corrected and added ranks 26-50. -BrknSoul (talk) 04:12, 29 April 2017 (UTC)
Removed ranks 41-50 due to * Hotfix (2017-05-22): Artifact Knowledge can now be researched to a maximum level of 40 (was 50). -BrknSoul (talk) 13:47, 24 May 2017 (UTC)