Source: The Book of Many Things

Wondrous Item, very rare

This deck of heavy vellum cards hums with the magic of the Elemental Chaos.

The magic of the deck functions only if cards are drawn at random (a deck of real-world playing cards can simulate the deck). As an action, you can draw a random card from this deck and throw it to make a ranged spell attack, using Dexterity for the attack roll. The card has a range of 30 feet. On a hit, it deals 1d4 slashing damage and imposes a magical effect determined by its suit, as detailed in the Deck of Wild Cards table. The card immediately returns to the deck after it hits or misses a target.

Deck of Wild Cards

d4	Suit	Effect
1	♣️ (Rods)	The card explodes in a burst of fire. The target and each creature within 5 feet of it must succeed on a DC 15 Dexterity saving throw or take 2d8 fire damage.
2	♦️ (Coins)	The card shoots streaks of lightning. The target must make a DC 15 Dexterity saving throw. On a failed save, the target has the blinded condition until the end of your next turn, and each creature within 10 feet of the target takes 1d6 lightning damage.
3	♥️ (Cups)	The card covers the target in a thick layer of ice. The target takes 1d10 cold damage and must succeed on a DC 15 Constitution saving throw or have the restrained condition until the end of your next turn.
4	♠️ (Swords)	The card unleashes a sharp, concussive blast. The target and each creature within 5 feet of it take 1d6 force damage and must succeed on a DC 15 Strength saving throw or have the prone condition.