Lockes
Soul Cost to summon daemon: 5
At any time and as often as desired, a corporation employing Lockes may pay (15% + 6 rounded up) of his souls to lock all the daemons of another corporation. If he tries to lock more than 1 corporation at the same time, the locking cost is (35%+6) for the next corporation locked, (55%+6) for the next etc… A corporation cannot use lockes with 6 souls or below. Lockes may be used on corporations with no daemons. When their daemons are locked, the corporation who employs the locked daemons cannot release them and cannot employ new daemons. The locked corporation must continue paying the total of all daemon costs multiplied by two everytime time advances. 

Lockes cannot be used on bankrupt corporations. To remove the effect of Lockes, the Corporation with their daemons locked may pay 4DICEx worth of cash, where x is the number of daemons owned +1 , to the corporation who locked him. Lockes CAN be locked by another lockes.

I balanced Lockes with a hefty soul cost but an additional penalty on being locked.