Collectible Card Game Headquarters

Hi,

You're not able to cast War Tax (2U).fixed


Regards


ManaLink 3.0 Dec 2020 updated with the March 2021 update

War Tax-unsearchable

Fixed in commit ec52cef. I didn't fix that it works only for opponent's creatures.
EDIT: And there is also this rule:
10/4/2004 You can choose X=0. This doesn’t have an effect most of the time, but it does mean that creatures can’t attack unless the controller chooses to pay the cost (a cost of zero is not automatically paid, so the controller can choose to not pay).