Censer of Summoning Hostile Air Elementals: This thurible is indistinguishable
from other censers - magical or ordinary. It is cursed, so
that if incense is burned within from 1 to 4 enraged air elementals
will appear, 1 per round, from the censer and attack any and all creatures
within sight. The censer will burn and cannot be extinauished until either
the summoner or the elementals have been killed.