Possibility Storm

Izzet League Spell
Level 5
Casting Time: 1 Action
Duration: 1 Minute (Concentration)
Range: 60 ft
One target willing creature within range (including yourself) gains this enchantment until it ends. At the beginning of each turn in combat, they flip a coin until it comes up tails. For each heads, they may take an additional Action (or Bonus Action). They may cast Spells for these actions if they so choose and if they have the spell slots to do so.