Dark Tarth is a common researcher from the Communist Crusade event. She automates and speeds up Knights.

Dark Tarth Speed Dark Science cost Copies Needed
Level 1 x8 Free 1
Level 2 x16 100 5
Level 3 x32 200 10
Level 4 x64 300 20
Level 5 x128 400 50
Level 6 x256 800 100
Level 7 x512 2000 200
Level 8 x1024 4000 400


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