Polymorph

[Frank Tore Johansen <frankj>]

Polymorph is tuneable if you think its too powerful.  All the
numbers below can easily be changed.

Right now there is a one in fifteen chance of an item evaporating.
Also, an item can gain four times its value or get reduced to
a sixth of its value (and there is a one in five (dont reduce this
below two) chance that the item _can_ be reduced to something of
even less value).

-Frank.