Silver Seal Spell

Within the room, spells can’t be cast, and magic items become mundane. 
== How to cast the Spell ==
This spell requires a room built to certain specifications: A perfect cube with four walls, a floor, and a roof. The room should have no windows and only one door. Inside each wall, perfectly in the center, a symbol, wroght in silver must be hung. The door should be in the center of it's wall and the symbol should be centered above the door on the outside of the room. Silver wire must be run between each hand. Each individual hand, must be connected to the other three with a silver wire. Once they are all connected, four magic users must stand, one at each symbol and touch the center with their own hand and speak the incantation in unison "Damnum Magicae". 
If the spell works it should push the casters away with moderate force. 
== Power of the Spell ==
Depending on all of the casters' strengths and abilities, the spell may or may not work.
1-4 = There is no chance of the spell working, and you will probably die, and possibly everyone nearby.
5-9 = Either nothing will happening, or the spell will melt one or all the silver workings, potentially harming everyone.
10-14 = There is the possibility of the spell dampening the effects of magic inside the room.
15-19 = The Spell might work, partially or fully.
20+ = The spell will work
== Recommended Uses ==
* To keep a room magic-free.
== Possible Complications ==
If the original casting works, you might get knocked over. Also, if any working becomes significantly damaged, or the silver wiring is broken, the spell becomes ineffective.
=== Animate Objects ===
Magical animals are still able to use their innate magical abilities and werewolves still transform. However, spells do not work, Spirit Animals cannot be reached, and Elemental Magic is non existent. 
=== Inanimate Objects ===
Potions consumed are useless, and magical objects become mundane.