demiurge1138 said:Perhaps we should give them more specifically mage-killing abilities, like:
Disrupting Attack (Su): A yau-mor's slam attacks (since it gets two attacks but has the body of a man, I assume they're slams) set up painful, distracting vibrations for 1d4 rounds. Any spellcaster hit by a yau-mor's slam attack must succeed a DC X Concentration check any time he casts a spell during this period. The save DC is Strength based.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.