Two-weapon casting

Through your training in fighting and the arcane arts, you have learned to combine the two in combat gaining the following benefits:

• You can use a component pouch or a spellcasting focus even if you are holding a weapon in both hands, if those weapons are light and you are proficient with them.
• You can perform the somatic components of spells with a light weapon if you are proficient with it.
• When you cast a spell with a casting time of 1 action, if you are holding a weapon in both hands, you can use a bonus action to attack with a light weapon. You don't add your ability modifier to the damage of the bonus attack, also if the spell requires concentration you don't add your ability modifier to the attack roll. In either case, you still add the ability modifier if it's negative.