the ghost spell create a ring and all of your lasts attacks dead troops appears in it and defensive building target ghosts during the time of spell in fact they target nothing !!!the ghost has no damage and just for Distract
they randomly form in the ring of spell in air and ground units !!! and distract all defensive building (even air defense!!)
here some info about different lvl of ghost spell!!
lvl_____up Cost_____cost(DE)_____unit HP_____ summond unit(per second)_____time (sec)
1_______ - _________ 140________ 100__________________5___________________2
2______50000_______155_________100________________ _7__________________2.5
3______65000_______170_________100________________ _9___________________3
4______90000_______200_________125________________ _10__________________4



the ghost has no damage and just for Distract
