Jump-Start (Izzet League)

"My specialty is theoretical universal limits and ways to circumvent them." 

You've found ways to shorten the timeframe while duplicating the output of spellcasting. For Science!

Each spell you cast gains the option to Jump-Start. To Jump-Start a spell, when you cast the spell, you must also either expend another spell slot of any level below the cast spell's spell slot OR forfeit your bonus action and any reaction until your next turn. When you Jump-Start a spell, the entire spell is cast twice, though the 2nd cast also requires a roll on the Wild Magic Surge table.

You can cast a number of Jump-Start spells equal to 1/2 of your proficiency bonus, rounded up, and all expended uses are restored when you finish a long rest.