There is no reason why this spell's School should be "Universal".
The effect is pretty much an army-wide Recitation (Spell Compendium). Look up that spell and use whatever school it is listed as.
Which is called a Legion spell, as introduced in Heroes of Battle.
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Originally Posted by Venger
killing and eating a bag of rats is probably kosher.
Gosh 2D8HP, you are so very correct (and also good looking), and your humility is stunning