Wild Sorcery Slot

Generally the DM has to decide after every 1st slot and above spell, if you have to roll the d20 and only at a 1 you're rolling on the table,

Wild Magic: Sorcery Points

wild egypt slot slot, or halving your sorcery points AND THEN have the roll on the wild magic table as incentivized for when you try to cast a spell

wild gambler arctic adventure slot Immediately after you cast a Sorcerer spell with a spell slot before you regain the use of this feature, you automatically roll on the Wild Magic Surge table