Pendulum

You give the touched creature an aspect of regularity in its motions and fortunes. If the target gets a failure on a Wisdom saving throw, then for the duration of the spell it doesn’t make d20 rolls—t

Level
1
School
enchantment
Casting time
1 action
Range
Touch
Components
V, S, M
Duration
Up to 1 minute
Classes
Bard, Cleric, Paladin, Sorcerer, Wizard
Concentration
Yes

You give the touched creature an aspect of regularity in its motions and fortunes. If the target gets a failure on a Wisdom saving throw, then for the duration of the spell it doesn’t make d20 rolls—to determine the results of attack rolls, ability checks, and saving throws it instead follows the sequence 20, 1, 19, 2, 18, 3, 17, 4, and so on.

Source and licence

From Deep Magic (open content).

Licence: Open Game Content (OGL 1.0a).

Every licence notice Tavern Bag relies on.