A Shiny ruby carved D100, when rolled one of many effects take effect.

1. Your current gold is halfed - bad

2. Your current Hitpoints are halfed. - bad

3. You gain one level, of exhaustion 

4. You form a puddle of blood at your feet while stationary, while walking you leave bloody footprints. Lasts until a long rest occurs. - neutral

5. A stone statue of yourself appears behind you, in exact detail, it does nothing, and will remain there until another 5 is rolled. - neutral

6. You gain disadvantage on your next roll, not with this die. - bad

7. You gain +10 to your next roll, not on this die. - good

8. Your clothes fall off. - neutral

9. Your current Hitpoints are halfed. - bad

10. A tankard of your favourite ale appears in your hand. - good

11.  You hear rumors of a Tarrasque being sighted near by.

12. You are knocked prone by an invisible force, take 1d6 damage - bad

13. There is an ominous feeling of someone watching you, there is no one, but you feel it. - neutral

14. A person from your past visits you, be them dead or alive, they look as you remember, and have a quick chat, to then walk 3 steps away and disappear. - neutral

15.  A fire elemental rips through a hole in the fabric of space, and enters the material realm infront of you, it attacks.

16. You are surrounded by HARDCORE ROCK music for the next minute.

17. The next time you have intercourse with someone, they fall madly in love with you, if you reject them for any reason, they kill themself within the day

18. A chest appears in front of you, investigating it reveals it is locked, it cannot be picked with thieves tools, but it can be flipped upside down to reveal a secret button to open it

19. a chest appears in front of you, it is not locked, but it has a chain wrapped around it, removing the chain will do nothing, and inside is a ring of protection +1

20. A chest appears in front of you, its a mimic

21.A chest appears in front of you, but it is just an illusion, and you will phase through it when attempting to touch it

22. A chest appears in front of you, its so heavy it cannot be lifted, the lid will open to reveal a single feather

23. A chest appears in front of you, when attempting to open it, it explodes doing 10d6 damage to whomever opened it

24. Your current amount of gold is doubled.

25. a potion appears in your hand, The potion is Coca-Cola. Describe the sugary taste and fizz, but don't use the brand name. See if the player figures it out.

26. A potion appears in your hand, The drinker has a Scottish accent for 1 hour, and takes 1d4 damage every time the player says something in character without attempting that accent.

27. A potion appears in your hand, The vial contains water. Dyed water.

28. A potion appears in your hand, You get a single wish spell, except what happens is the exact opposite of what you asked for.

29. A potion appears in your hand, You get a single wish spell.

30. You have a nightmare on the next long rest and get no rest through the night. - bad

31. You are teleported to an abyss, closing your eyes for 10 seconds is the only way to return

32. The next time you attack, the roll is changed to a natural one, and your weapon is flung from your hand

33. You gain your full hit points back

34. Four tentacles grab you and grapple you, to escape you have to roll a DC 19 Strength check, on a failed check you have to roll a DC 18 constitution save, on a failed save you take 15d4 bludgeoning damage as a fifth tentacle arrives, half as much on a successful save.

35. you start to levitate 1d4 feet off the ground

36. Ghostly voices start talking to you, with advice, can they be trusted? flip a coin, heads yes, tails no. the player doesn't know the outcome

37. The player must do a shot of hot sauce

38. The person next to you gains knowledge they shouldnt have about your character

39. Your character can cast one spell for free

40. Your eyes start rotation through the rainbow of colors. RGB eyes, no one knows what your up to based on your eyes, so you gain advantage on deception, but get disadvantage on persuasion 

41. You erupt in harmless flames, you feel no pain, no heat, but it is scary. - bad

42. You may ask one question, and a godly entity will answer it

43. A red dragon falls from the sky, injured, scared, looking for its master, if touched it dissolves into ash, it cannot attack. - neutral

44. A voice tells you that you need to make a deal with them, making a deal with them will be entirely upto what the player says in reply. the voice sounds like a little girl. 

45. Two traveling bards one caring guitar, and one a voice amplification device arrive and give you an amazing song, that sends a demon back to hell, granting you inspiration till you use it/long rest.

46. 10 bandits appear around you, they threaten you, you can either pay them half of your current money, or attack them

47. A man forms from your shadow and asks a favour. When whatever the favour is complete he disappears, leaving nothing but a dark spot on the ground. - neutral

48. You have disadvantage on every roll till your next long rest

49. When you spend any money after this roll, you accidently hand them doubled

50/50. flip a coin, if heads, you gain 50 hitpoints, if tails you lose 50 hitpoints

51. A Sword appears in a rock near you, you physically cannot remove it. - neutral

52. You have advantage on all rolls till the next long rest

53. Your character fades out of consciousness, when you awake, your in a cart, with other people tied and bound, and the guy across from you says "Hey your finally awake"

54. Magical runes appear on your body, if you are touched during the time that they are active, the enemy instantly gets knocked unconscious. friendly fire does count for the knock. Lasts until activated, or until a long rest. - good

55. You become extremely drunk, you seem to not notice, but everyone around you can definitely tell

56. A Dwarf crawls out of a box located near by, he looks at you, and starts to walk away.

57. A Dwarf falls from the sky, splattering on the ground, looking up will reveal no logical source of a dwarf - neutral

58. A person appears and hands you an orb, you have no idea what it is

59. Someone who looks exactly like you appears and proclaims that you are a fake, and they are the real one

60. A skull appears inside your backpack, guards are looking for a stolen skull from a museum/graveyard/wizards building.

61. Black ominous smoke starts to billow from your skin, when walking it creates a smoke trail, and when standing still you cannot see

62. Your knocked on your ass by a small explosion take 1d10 damage

63. You are given a scroll by a person passing by, the scroll says "Your being watched." investigating will find a man in a dark robe, when you get close, he teleports away

64. You are a possessed by a demon for 1d4 days, roll a wisdom saving throw when you wake up, if you make it nothing happens, if you do not, the DM chooses at random points to intervene with your roleplay and change what happens with your character

65. Polymorphs into a Sheep till hp reduced to 0 in sheep form

66. A group of 5 goblins appear and attack you and your party - bad

67.A man in a black robe comes to your aid, it will do one thing for you, then he will disappear, he can do anything without fail, you just have to command him. - good

68. The first person you see after rolling this has to roll a wisdom saving through dc 10 or forget of your existence 

69. You gain one level - good

70. You lose one item from your inventory, decided by the dm

71. The sky turns red, and it starts raining blood, everyone else seems to not be effected by this

72. You grow to be 10 ft 6, if inside a building you take 1d10 bludgeoning damage due to hitting your head

73. Becomes frightened of a color till next long rest d12 for color (red, blue, yellow, green, purple, black, white, brown, gold, silver, orange, pink)

74. Roll a stealth check, the only time anything actually happens is at a natural one, where when it is rolled, a group of 3 assassins attempt to attack you

75. Your group gains a gift from a person in power, be it a leader, a god, anything.

76. Loud disembodied voices insults the character

77. You can only use sentences that start with "legend has it" for the rest of the session

78. You polymorph into whatever is to your right

79. Your alignment changes for 1d4 days, the dm's discretion of what it changes to

80. Someone of great importance to the situation appears and offers great advice

81. You gain the appearance of a skeletal lich 

82. You have an erection for longer than 4 hours.

83. You can no longer smell until the next long rest.

84. The next phrase spoken becomes true

85. A man requests a favour, after completed he hands you a chest containing 1500 gold, and a note saying thank you.

86. All of your spell slots are expended.

87. Your armor feels like it grows in thickness, your ac is +2, but your speed is reduced by half

88. You have a theme song now, the dm chooses and plays it wherever you go

89. The Dm chooses one language and you can understand and speak it for 1d10 days

90. You are reduced to 0 hitpoints, roll death saves my dude.

91. An Adult red dragon swoops down and leaves a treasure chest, opening will reveal a magic item, dm's discretion 

92. The sun gets eclipsed by a ball of pure darkness in the sky, it will remain there for 1d10 days, during the this time, 2 dragons shall fight in the sky, wrecking havoc wherever the orb hovers above

93. The earth shakes with great force, if the party chooses to investigate, they notice smoke off in the distance, they discover a massive crater with a half burnt magic book if they travel to the location

94. The die elevates and rolls again, spliting into 3 copies of the original die, rolling 3 numbers, then combining back into the single die again.

95. When ever talking to someone of the same sex you cannot hear them.

96. When ever you talk to someone of the opposite sex as your character they cannot hear you until the next short rest

97. On your next attack roll you add 2 d20 to the damage

98. you are teleported from your current location to the last bed you slept in

99. The ground shakes, you hear a rhythmic pulsing from under your feet, if rolled 3 times, a stone golem will rise from their current spot and attack

100. You cannot speak common till the next long rest

Notes: while attuned when rolled it has its special effects, non attuned its just a pretty die. On a roll that is the same as the previous roll, time stops, an invisible hand grabs the die and rerolls it, as it rolls time resumes.