Since gnomes and Svirfs are so short, they would more than likely gain the ability to take someone out below the knees. This could be done in the form of getting close enough to their victim to stomp on, or smash their feet/toes/paws. While not necessarily a lethal skill, done correctly, crushing someone's foot can result in broken bones which make certain activities quite painful.

usage: inherent 'footstomp' victim

affects: This skill results in the gnome trying to smash on or both feet of their victim. Someone affected by the stomp would take light damage from the stomp (maim, MUTILATE) at high levels, but would have their movement statistics reduced.

There would be a chance that the stomp would actually break a bone in the foot of the victim (Similar to the chance of kote breaking a wrist). If that were the case, the victim would be unable to kick successfully (Perhaps getting the message: "You don't want to do any further damage to your foot.") and would have their movement significantly hampered (I'm thinking: Every step would be like walking through a forest. Walking messages would be replaced by 'limping' messages to discern someone affected by this. For example: instead of seeing: 'Nimbus has arrived', or 'Nimbus leaves west', you'd see 'Nimbus limps in', and 'Nimbus limps west') Broken feet can be healed by healers and transmuters with repair bone etc.

restrictions: Probably a level based skill. Something along the lines of 21-22 before it would be active. Can only be done on non flying creatures, since the stomp is really sandwiching the victim's foot between the gnome's and the ground. Decent lag. The target would have to be upwards of 1 to 2 sizes bigger than you, otherwise you wouldn't be able to maneuver in to do it. Boots could have an affect on both the ability or inabilty to perform the skill (Both the victim's and user's boots). Skills that keep you at bay, like distance, could counter the skill. Can't be done on, or in water.