Wolly's Wacky Wild Surge

Choose a creature that you can see within range to cast this spell at. That creature must make a Constitution saving throw, or become jinxed for the duration of the spell. While jinxed, at the start of each of the creature's turns they must roll an effect on the wild magic surge table. Additionally, if the creature casts a spell during their turn, they must roll a d20, and on a 1 they must roll on the wild magic surge table again. Only a wish spell or the will of a God can stop the effect of a wild magic surge. At the end of an effected creature's turn, they can roll another saving throw. On a success, the spell ends and they are no longer jinxed. 

At Higher Levels: When you cast this spell using a 3rd level spell slot or higher, you may target one additional creature for each slot level above 2nd.