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- You might be looking for one of these cards: Shadow Oil (1 mana), Shadow Oil (5 mana).
Shadow Oil is a choice card, created by 
Kazakus's Battlecry.
For more information, see Kazakus.
Chosen from[]
Resulting spell[]
This choice adds its effects to this "base spell".
Patch changes
Patch 7.0.0.15590 (2016-11-29):
- Added.
