Magnystic Mites are artificial creatures the size of a fruit fly made by Magic-users. They are usually released as part of a trap and swarm those nearby, biting and latching onto them. Once latched on, they attract the magical effects that originate from magic wands and other devices. Additionally, attacks made against the mites that miss will do damage to the victim as long as the attack would hit the victim’s AC. The mites themselves are immune to all magic, as the energy simply passes through them and into their victim (or into the ether, if they are not attached to a target). Weapons with magical bonuses will still be granted their bonus to hit.

As long as it is attached to a creature, even if it’s only hanging onto fur or clothing, a mite will apply a save-targeting penalty against the victim’s saves vs. Wands. Any single mite can only apply the penalty once, and the penalty persists until it is removed. Sometimes, a particularly-skilled wizard will tune the mites to a specific device, doubling the save-targeting penalty with respect to the effects of that device.