Mana Towers

{1}{t}: Add three mana in any combination of colours in your commander's colour identity.
The opponent on your left gains control of
Mana Towers.
"Ever since the Mana Towers have been built, there was a great war. Constantly, the Mana Towers switched sides, until the last fractions decided to call it a truce and share the Mana Towers." - Gerrard