Arcane Reflex

You have been trained to drastically push yourself to cast magic beyond your normal speeds in dire situations.

You can use your reaction to cast a spell out of initiative order at the cost of your action of your next turn. When casting this way, it is as if you are casting on your turn. After casting, attacks made against you have advantage until the end of your next turn.

Once you have used this feature, you cannot use it again until you take a long rest