Twist the Skein

1st-level enchantment

Casting Time: 1 reaction, which you take when a creature makes an attack roll, saving throw, or skill check
Range: 30 feet
Components: S
Duration: Instantaneous

You tweak a strand of a creature’s fate as it attempts an attack roll, saving throw, or skill check. Roll a d20 and subtract 10 to produce a number from 10 to –9. Add that number to the creature’s roll. This adjustment can turn a failure into a success or vice versa, or it might not change the outcome at all.