Source: Dungeon Master's Guide
Wondrous Item, Uncommon
This box contains a set of cards. A full deck has 34 cards: 32 depicting specific creatures and two with a mirrored surface. A deck found as treasure is usually missing 1d20 − 1 cards.
The magic of the deck functions only if its cards are drawn at random. You can take a Magic action to draw a card at random from the deck and throw it to the ground at a point within 30 feet of yourself. An illusion of a creature, determined by rolling on the Deck of Illusions table, forms over the thrown card and remains until dispelled. The illusory creature created by the card looks and behaves like a real creature of its kind, except that it can do no harm. While you are within 120 feet of the illusory creature and can see it, you can take a Magic action to move it anywhere within 30 feet of its card.
Any physical interaction with the illusory creature reveals it to be false, because objects pass through it. A creature that takes a Study action to visually inspect the illusory creature identifies it as an illusion with a successful DC 15 Intelligence (Investigation) check. The illusion lasts until its card is moved or the illusion is dispelled (using a Dispel Magic spell or a similar effect). When the illusion ends, the image on its card disappears, and that card can’t be used again.
Deck of Illusions
| 1d100 | Illusion* |
|---|---|
| 01–03 | Adult Red Dragon |
| 04–06 | Archmage |
| 07–09 | Assassin |
| 10–12 | Bandit Captain |
| 13–15 | Beholder |
| 16–18 | Berserker |
| 19–21 | Bugbear Warrior |
| 22–24 | Cloud Giant |
| 25–27 | Druid |
| 28–30 | Erinyes |
| 31–33 | Ettin |
| 34–36 | Fire Giant |
| 37–39 | Frost Giant |
| 40–42 | Gnoll Warrior |
| 43–45 | Goblin Warrior |
| 46–48 | Guardian Naga |
| 49–51 | Hill Giant |
| 52–54 | Hobgoblin Warrior |
| 55–57 | Incubus |
| 58–60 | Iron Golem |
| 61–63 | Knight |
| 64–66 | Kobold Warrior |
| 67–69 | Lich |
| 70–72 | Medusa |
| 73–75 | Night Hag |
| 76–78 | Ogre |
| 79–81 | Oni |
| 82–84 | Priest |
| 85–87 | Succubus |
| 88–90 | Troll |
| 91–93 | Veteran Warrior |
| 94–96 | Wyvern |
| 97–00 | The card drawer |
*Stat blocks for these creatures (except the card drawer) appear in the Monster Manual.