Two Minds One Body

Years of studying matters of the arcane and magic has evolved your brain. You unlock the ability to separate thought processing from left and right hemispheres of the cerebrum:

• You may have up to two concentration spells up at any given time.
• Spells cast this way have their duration halved, because they don't have your full concentration. This applies to the 2nd spell cast requiring concentration
• If the spell has a die roll, use one size die down (in example 2d6 now becomes 2d4) with a minimum of using a d4. this affects the 2nd spell cast only.
• If you have two concentration spells in use and cast a one without concentration, both concentration spells are dropped.
• You have advantage on constitution saving throws when trying to maintain concentration spells. On a failed save, both spells are lost.