A mob from the infamous village of Ethygim, as evidenced by their propensity to remove players peacefully going about the last of their business before hunting the Drive, sometimes /including/ hunting the Drive, and carrying them to the opposite end of the Island from where they want to be.

The easiest way to summon them is to not want them to show up. They delight in taking players to the Drive before they are ready and when they're low on hp, but have never shown up at all for people actually seeking the Drive out, or have only taken them to the wrong places repeatedly, causing waste of Travel.