One of these special containers will typically be inlaid with /
runes of silver and stoppered by a brass plug bearing a seal of great
dweomer set round with sigils, glyphs, and special symbols.

When the user
speaks a command, he or she can force any creature from another plane
(daemon, demon, devil, elemental, etc.) into the container, provided the
creature does not make its saving throw versus magic - after magic
resistance, if any, is checked. Range is 6”. Only 1 creature at a time can be
sa contained. Loosing the stopper frees the captured creature; ond if the
individual loosing the plug knows the command word, the creature can be
forced to serve for 1 turn (or to perform a minor service which takes up to 1
hour of time). If freed without command knowledge, dice for the
creature’s reaction . . . Any attempt to force the same creature into the
flask a second time allows it +2 on its saving throw and makes it VERY
angry and totally hostile. A discovered bottle can contain:
 

01-50	empty
51-54	air elemental
55-56	demon (type I-III)
57	demon (type IV-VI)
58-59	devil (lesser)
60	devil (greater)
61-65	djinni
66-69	earth elemental
70-72	djinni
73-76	fire elemental
77-81	invisible stalker
82-83	mezzodaemon
84-85	night hag
86	nycadaemon
87-89	rakshasa
90-93	salamander
94-97	water elemental
98-99	wind walker
00	xorn

ADQ: If you are tyring to force a creature
with magic resistance into an Iron Flask, what level
of magick should you assume for the Flask?
ADA: Treat the Flask as magick from an 11th level
caster. No adjustment to the creature's stated MR
is needed. Note that the creature is still entitled to
a save vs. Spells if it fails the MR check.
(Polyhedron #19)