Undo Button Desperately Needed

[frownifdown]

It is way too easy to Misclick and play a troop in a wrong location. I've instinctively clicked what I thought was the undo button several times and instead clicked pass on the ability or special base power. It's helpful to put them out there to have a better visualization (ala Azul) so I think it's pretty whack there isn't an undo.

[tchobello]

There is a Confirm option in the Preferences.

[MaxAlwaysWins]

Where in Preferences? I don't find!

Yes! UNDO button very needed!