Maybe some sort of power to land destruction conversions system? Like you can sacrifice one power to destroy one block in an enemy's land. Useful to break past certain points, but very risky seeing as you'd need 2+ power to break through anything enough to walk through. Wood doors= 2 power, Iron=5 , Button=1, Switch=3 ?
P.S. I know this probably isn't possible for your end.
P.S. I know this probably isn't possible for your end.