Dead Man's Hand

You imbue a playing card with dark magic and reveal it to one creature you can see within range. The target must make a Wisdom saving throw, taking 3d8 necrotic damage on a failed save, or half as much damage on a successful one. On a failed save, the target suffers an additional effect based on your rolls:

 Aces: If any of your d8 rolls were a 1, the target takes an additional 1d8+6 necrotic damage at the end of its next turn.

 Eights: If any of your d8 rolls were an 8, the target has disadvantage on all attack rolls, skill checks and saving throws until the end of its next turn.