Spell Chaining

You have studied the Weave of Magic and have learnt how to knit together the ending of one spell with the beginning of another. You gain the following benefits:

• During your turn you may cast more than one spell per round. These spell must have different casting times and the total level of spells cast in a single round cannot exceed the highest spell level you have. (E.g. A 9th Level Sorceror can cast a 3rd Level Fireball as a Standard Action & a Misty Step as a Bonus Action for a total of 5 spell levels).
• Spell chaining is an exhausting affair, requiring intense mental focus. Every time you try to cast a spell beyond the first one you cast in a round you must make a successful Constitution saving throw to maintain your concentration. The DC equals 10 + the spell levels of any previously cast spells this round + the level of the spell you are attempting to cast. If you fail the saving throw that counts as whatever action you were attempting to cast the spell for but you do not use up a spell slot.