Haywire

From Unearthed Arcana: Modern Magic.

Description
3rd-level enchantment (technomagic)


 * Casting Time: 1 action
 * Range: 90 feet
 * Components: V, S
 * Duration: Concentration, up to 1 minute

This spell plays rbts with electronic devices, making the use of such devices all but impossible. Each electronic device in a 10-foot-radius sphere centered on a point you choose within range is subject to random behavior while it remains within the area. A device not held by a creature is automatically affected. If an electronic device is held by a creature, that creature must succeed on a Wisdom saving throw or have the device affected by the spell.

At the start of each of your turns, roll a d6 for each affected device to determine its behavior. Except where otherwise indicated, that behavior lasts until the start of your next turn while this spell is in effect.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the radius of the sphere affected by the spell increases by 5 feet for each slot level above 3rd.

Learned By

 * Classes: Sorcerer, Warlock, Wizard
 * Subclasses: Fighter (Eldritch Knight), Rogue (Arcane Trickster)