Wild Magic Overload

Each time you cast a spell, the chances of a Wild Magic Surge increase. After casting a sorcerer spell of 1st level or higher, and after the DM decides whether or not you roll for a Wild Magic Surge, your character gains 1 Wild Magic charge. When you roll for a Wild Magic Surge, the number needed to gain an effect from Wild Magic Surge table is between 1 and 1 plus the number of Wild Magic charges or lower. The Wild Magic charges dissipate after a long rest.