Was just brainstorming and trying to decide on a new spell for the game and decided on Necromancy.

Necromancy
Cost 25,000 elixer.
Works on gravestones left by dead troops.
Once placed all gravestones in the area spawn 1 Skeleton troop. The level of the spell determines max number of skeletons able to be summoned. At level 1 max should be set around 10 troops.
Takes 1hr to develop.
Avaliable at Spell Factory Lvl 5

Research
Lvl 1 - 1hr train time. 25,000 elixer. 10 troop limit.
Lvl 2 - 1hr 30min train time. 35,000 elixer. 14 troop limit.
Lvl 3 - 2hr train time. 45,000 elixer. 18 troop limit.

Opinions? Ideas?