undo button

[rich el]

This game drastically needs an undo button and a confirm button

Undo to retake a mistake (misreading the card causes attacks to miss)
and a confirm IN CASE you do misread, to confirm that you want to actually use the card.

[Flyndersticks]

Co-sign. I keep making lots of goofy mistakes that I can't undo before committing to.

[ryo60]

+1

please

[Eaglemonk]

The undo function would be nice specialy if you play the game over the smartphone. i had it often because of the small screen i push the wrong field or the wrong card.

[KingChaos]

+1

[Sasurai087]

+1 to this as well. I've played against a friend and 2 randoms today and they all wished there was an undo button.
The game has interactions that seem simple when read, but easily misinterpreted. An undo button would help newbies get into this game more easily by feeling less punished.