Talk:Jackknife Dragon/Rulings/@comment-4844839-20140523060256/@comment-13275021-20140523105817

Yup, I e-mailed Bushiroad about this matter, and they informed me that Jackknife Dragon's ACT has no cost to activate it. You may choose to pay 2 gauge when the ability resolves. It's the same with any other ACT ability that I can think of as well. For instance, Jackknife "Thunder Storm"'s Thunder Raid ability, which says that you MAY pay 2 life during resolution.