The hijack spell takes over a defensive building. For example, if you drop the hijack spell on a mortar, the mortar now becomes yours - it will attack other defenses and CC troops. All other defenses and the CC troops will now primarily attack this hijacked defensive building. The hijack duration lasts as long as the building survives.
The spell will be created via the dark spell factory and will cost 100 dark elixer at level one - increasing by 10-20 dark elixer per upgrade. The cooking time will be 3 minutes. To research the spell in the labratory, it will cost 40,000 dark elixer to upgrade it from level one to level two.
It will be unlocked at town hall 9 and can be upgraded once per town hall. In addition, with each upgrade the radius increase, increasing the amount of defensive buildings it can take over at once.
The color of the spell will black, possibly even changing the color of the building.
