Zamasu, the Mastermind (BT7-094) [Assault of the Saiyans]

Product Details

[Blocker] (When one of your other cards is attacked, you may switch this card to Rest Mode and change the target of the attack to this card.)
[Permanent] If there is a "Goku Black" card in your Battle Area or Leader Area, you can play this card from your hand without paying its energy cost.