Bag of Dice

A bag of dice is a large bag of holding containing dice of all types and colors.  An attuned creature can use an Action to take a handful out of the bag (outside of combat, you can take out multiple handfuls at once).  Each handful contains 1d4 d4s, 1d6 d6s, 1d8 d8s, ect.  Roll a number of d100s equal to the number of dice in each handful. On each 1, there is a low-roll die, and on a 100, a high-roll die (see some of my other homebrew).  The DM can decide the type of die the low-roll and the high roll are, or roll a d6 to determine.  You can use any die in place of any one costless Material component in a spell (a low- or high-roll die can replicate a component with a gp cost), unless you DM decides the component cannot be replaced by a magical die.  Once a die is used in this way, it becomes nonmagical, unable to be repaired.  In addition, each die, while magical, has 3 charges.  You can use a bonus action to expend a charge by rolling a die* (with advantage of disadvantage if it is a high- or low-roll die) and creates an effect related to the result (a d100-type d10 with two digits instead of one on each face counts as a normal d10): see the table below. 

Roll | Result

  1.  The bag looses its magic forever, though any dice currently outside it still work. If this result has already happened, it regains its magic.

  2.  A hungry white dragon wyrmling appears in an unoccupied space within 30 ft. A successful Charisma-based Animal Handling check (DC 15) causes it to vanish peacefully - otherwise it fights to the death. 

 3-4.  A young blue dragon appears in the air above, wishing to claim the bag for its own horde.  It fights to the death, after which it vanishes. 

  5-7.  An avalanche of dice flows out of thin air above the bag.  The avalanche deals 1d20 bludgeoning damage to any creature within a 25-ft. cone who fails a DC 20 Dexterity saving throw. 

  8.  The same as on a 5-7, but the dice are spectral and deal force damage to anyone who fails the save. 

 9-11.  A purple worm appears out of the ground and attacks.  If hit with a non-cantrip spell by one who isn't trying to cause this effect, it turns into a friendly (still evil) mind flayer who will try to eat the party's brains at a later date. 

12.   A dragon turtle who appears as an emerald statuette in real life appears out of the bag, visiting you in your dreams and imparting wisdom and advice while you have the figurine and are attuned to the bag. 

13-14.  An angry adult sapphire dragon forms in the nearby Border Ethereal, following you until you un-attune to the bag, or until you travel to the Ethereal, at which point it attacks, fighting until it dies or you succeed on a DC 20 CHA (Persuasion) check to get it to depart peacefully.  You don't know about the dragon, or whether the die roll was a waste of time or not. 

15-16.  A chaotic evil drow climbs out of the bag, dueling you (he is incapable of being harmed by anyone else) to the death, at which point (no matter who died), it crawls back into the bag until another 15 or 16 is rolled. 

 17.  A githyanki knight apparition (incorporeal yet harmable and capable of doing harm if necessary) forms in the air above the bag and tries to convince the characters to join the Sha’sal Khou (of which he is a member). 

 18-19.  The tarrasque appears within an unoccupied space within 1000 ft. and tries to eat the bag.  If it succeeds, it disappears, 1d100 magical dice left in its place.  A dice effect that involves the bag instead allows you to roll again, unless it is a 20, in which case the new bag appears in the spot the die was in. 

 20.  Another bag of dice appears, popping out of the first bag. 

*If a die's last charge is expended, it looses its magic until it is returned to the bag. 

Notes: spellcaster