Multifocus

Through rigorous training, you are able to divide your attention over several things at once.

• You are able to concentrate on two spells or effects at the same time, though doing so will leave you drained. While you're maintaining concentration on more than one spell or effect you have disadvantage on Constitution saving throws made to maintain concentration. Every time you end your turn while concentrating on two spells or effects, your exhaustion level increases by one. This exhaustion can't be prevented in any way.
• You can cast spells even when wearing armor you're not proficient in.
• You can take the Search action or identify a spell after it is cast (as per the rules in Xanathar's Guide) as a bonus action.