Can you trigger an Action even though you know it will result in nothing? (I want to execute this Action just to change the state of the board and not per the card's intended purpose).
Patron of the Arts (Mark of Madness expansion):
"Action: Drive a character insane to choose a Madness card in your discard pile and put it into your hand. Limit once per phase."
I just want more insane characters on my side. Can I just trigger this even though I don't have any Madness cards in my discard pile? Even if I did, can I just leave the Madness cards in my pile?
The Dikes of Ys (Mark of Madness expansion):
"Action: Pay 2 and sacrifice The Dikes of Ys to choose and destroy a support card."
I simply need to get rid of Dikes of Ys. Can I just pay 2 and sac this card even though I have no legal support card to target?