Walls

From AmtWiki

The most important aspect of any structure are the walls of which it is comprised. Generally, crypt walls are considered to be invulnerable to all forms of attack. This just keeps the rules-lawyering to a minimum.

On the chance that a scenario requires a wall or building to be breached or destroyed, we offer the following suggestions:

Spells that may be used to destroy a wall: Sphere of Annihilation, Fireball, Lightning Bolt. Each of these spells will destroy a 10x10 section of wall. Fireball and Lightning Bolt will also catch inflammable buildings on fire.
Burning structures are completely destroyed in a 300 count. After that time, treat the structure as a Lava Bed. Any player inside a burning structure will perish in a 50 count.
Extinguish (see DUAX) will also stop flames from burning further stopping the count. If structure is lit aflame again, count continues where it left off (unless was mended, see next)
Mend, Greater Mend, and Word of Mending may be used to repair a 10x10 section of wall.
Siege Weapons will also destroy a 10x10 section of wall per hit.
Teleport and other such abilities will only function as line-of-sight (i.e.: players may Teleport into a room with an open door, but may not Teleport around corners or into areas obstructed by walls, doors, or other players).