As is usual, a bag of tricks appears to be of typical size for sacks, and visual or other examination will not reveal any contents. 

However, if an individual reaches inside, he or she will feel a small, fuzzy object. 

If this is withdrawn and tossed 1-ft to 20-ft away, it will balloon into one of the following animals, which will obey and fight for the individual who brought it into being until the current combat terminates. The animals inside a bag of tricks are dependent upon which sort of bag is found. 

Roll d10 to determine which type:

Only 1 creature can be drawn forth at a time. It alone exists until it is slain or 1 turn has elapsed and it is ordered back into the bag of tricks. 

Another animal may then be brought forth, but it could be another just like the one which was drawn previously. Note that only one roll is made for type of bag, but type of creature is rolled for each time one is drawn forth. 

Up to 10 creatures maximum may be drawn from the bag each week.