Krieg (OP15-001) (OP15-001) [Adventure on Kami's Island]

[DON!! x1] [Opponent's Turn] If the only Characters on your field are {East Blue} type Characters, give all of your opponent's Characters -2000 power.<br>
[Activate: Main] [Once Per Turn] Rest up to 1 of your opponent's Characters that has 2 or more DON!! cards given.