Multicaster

You've learned how to focus intently on two spells at once, granting you the following bonuses:

• Increase your Constitution score by 1, to a maximum of 20.
• For 1 minute, you can focus your mind and concentrate on two spells at once. After casting a spell that requires concentration, you can enter a state of increased focus as a bonus action, allowing you to cast another spell that requires concentration and maintain concentration on both. While in this focused state, you are more susceptible to attacks; you take a -2 penalty to your AC, you have disadvantage on concentration saving throws to maintain spells, and you must use your bonus action on each of your turns to maintain concentration on both spells. If you don't use your bonus action to maintain concentration on both spells, then your state of focus ends early.
• You may enter this state of focus a number of times equal to your Spellcasting ability modifier (minimum of 1 time) per day.