Forum:Machina armored unit?

Can I activate The effect of M.A.U. during my opponent's turn? the effect must be activated during the battle phase or I can activate it when ever I want since it says once per turn? If I activate its effect during battle phase can I then activate Inferno reckless Summon?Dragonlord31086 14:02, March 22, 2010 (UTC)Dragonlord31086