I came across a brand new and original spell idea. What about the flamethrow spell? Flamethrow Spell covers the area's boundary with flame and throws flame to the core of the spell. Use on an archer tower and it will burn the arch archer tower completely and slows down the building around 2 tiles around it. Burns the traps in the area where it is deployed. Works as a poison spell too but difference is it target only ground and the troops stuck inside cannot escape.
You could add a sleep/guard option like heroes even for cc troops.
Please reply for any edits to be made in the spell.

