[Dalillama]

Thunderbolt ward
Spell Effects: Lesser Control X* + Lesser Create Energy.
Inherent Modifiers: Duration + Area effect + Damage (external burning)
Greater Effects: 0

This is a monster, spirit or undead ward that generates a lightning stroke to blast any prohibited entity that tries to pass it.

Typical Casting: Lesser Control X (5) + Lesser Create Energy (6) + Duration, 1 day (7) + Damage , external burning 3d (wall +30%) (6) + Area of Effect (10 yards ) (8). 33 energy (33*1)

* Spirit, Undead, or Body + mind, depending on what you are warding against. The latter case increases the cost to 38.