Skeleton Spell !

I have a cool Spell idea for Clash of Clans, the spell calls "Skeleton Spell" it's Aviable at Spellfactory level6 (or Dark(elixier)spellfactory level1) it only can make with Darkelixier . It cost like 450darkelixier in lvl1 , in lvl2 600darkelixier , in lvl3 (max lvl) 850 darkelixier . This spell can you put everywhere , in lvl1 it spawns 10skeletons , in lvl2 15skeletons , in lvl3 20skeletons . The Spell duration is 10seconds . The time to make the Spell is 30min. The color of the spell is Black . This spell is really helpfull . Please tell me if it's a good idea or not :) thanks.

Name of Spell : Skeleton Spell
Training Cost : lvl1= 450DE ,lvl2 600DE ,lvl3 850DE
Targets :Any
Effect Type : Area Splash
Damage Type/Amount (if applicable)
Training Time :30minutes
Description : The first Dark-Elixier Spell ! That spawns little undead creatures.
Research/Spell Levels : 3
Lab Level : 7