After having played for months, I just found out that in the top right corner of the map, under your army and money stats, there's a door icon you can click that gives you free powers. Thought I'd share this news in case anyone else failed to notice that game mechanic.

Yay for magical doors of plenty!!! ^_^

Made my day, thanks!

Yeah, that's a daily reward

Do you know there’s a prize wheel that appears each day too as long as you’ve won at least one war zone multiplayer game?

Prize Wheel is only for mobile users, not for web browser =|

Same for Army Production boost= mobile only