This idea has been rather thoroughly discussed in another post (mainly be Wolfmane and myself...), but under the \"Spell Wish List Thread.\" It was kind of off-topic under there, but anyway, here is the essence of the idea.
Basically, Mana Upkeep keeps your spells going at the cost of x mana per y seconds, mintutes, hours, etc. Then came the idea of \'emergency mana,\' which was mana used solely for upkeep purposes, and if it and the regular mana ran out, all enchantmnents failed. Also, if the regular mana was running out, then enchantments would look as if they\'re fading away. Enchantments would create a glowing aura around the enchanted item, the color of the Way. Ex., Dark enchantment on sword creates Dark Aura around sword.
Pros -
More unique magic system
Solves annoying routine of casting and recasting
Allows use of barriers that stay and drain mana power
Cons -
May be too complicated
Abuse (others casting spells on others and leaving spells there)
Feel free to add your ideas, pros, cons, etc. The entire discussion is
here .