The Grey Seer wafts warpstone gas over a unit within 6. The target moves at double rate, and has double Attacks. It must charge into hand-to-hand combat as soon as possible, and must always pursue. In each subsequent magic phase the unit suffers D6 wounds from over exertion.

Grey Seers only. Remains in play

Note that a unit which is Death Frenzied cannot also be frenzied - its doubled attacks cannot be further doubled on account of frenzy.