Engulfing

An engulfing attack is one in which you are surrounded by the monster, whether being swallowed whole by it (in the case of e.g. purple worms and trappers) or simply being drawn into it (fog clouds, vortices, air elementals, etc.).

Several types of damage can result from being engulfed:
 * Digestion - monsters that have swallowed you whole will digest you slowly over the course of several turns. A ring of slow digestion protects against this ("Obviously the purple worm doesn't like your taste.").
 * Physical - possessed by fog clouds ("You are laden with moisture and can barely breathe") and air elementals ("You are pummeled with debris!").
 * Fire, cold, shock, 'blinding - these result from the vortices.
 * Sickness - Juiblex's speciality.

To escape from an engulfed state, you can wait it out (which may kill you first), kill the engulfing monster (best done with e.g. a wand of death), zap a wand of digging (which also sets the monster to one hit point and in a state where you can kill it with one hit) or wand of opening, or ringing the charged Bell of Opening.