Dark spell factory

I was thinking we have a regular spell factory and they are adding dark evey thing y not some spells could be

invisibility
Instant health
decoy
fire
protect




invisibility-it will make anything in it in invisible just like the Queen's ability

Instant Health- it will restore a certain amount of health for any troop in a area in the time of a drop

Decoy- it will drop a ghost copy of all troops already deployed and are alive at the time they do no damage, can't set off traps but have 4x the amount of health and can take damage

Fire- it will set anything on fire for a certain amount of time

Protect- it will make any thing inside the area invincible as long they are inside