One of the more
useful NetHack tools. A
Bag of
Tricks is basically filled with
monsters in
fuzzball form. Taking one out ("apply"ing the
bag) creates a
random monster. A Bag of Tricks is generated with 1d20
charges. As long as
charges remain, applying the bag has a 22/23 chance of creating a random monster and a 1/23 chance of creating 2d4 monsters.
When you try to #loot the bag for the first time, it will sprout a vicious set of teeth and bite down on your hand for 1d10 points of damage -- this of course identifies the bag (but it can be deadly at low levels, and this is an embarassing way to die). A Bag of Tricks can be recharged by a scroll of charging. When the bag is out of charges, it becomes completely useless until recharged.