Rage Mage

You are able to focus your Rage in such a way that you do not impede your latent magical abilities. This allows you to do the following:

• You are able to cast and concentrate on spells while you are raging, using the Barbarian's Rage feature.
• You have disadvantage on concentration checks caused from taking damage.
• On the end each of turn that you concentrate on a spell while raging, you must make a straight concentration check to see if you can hold concentration on the spell. On a fail the spell's effect dissipates as normal. (This bullet point does not apply on the same turn in which you cast the spell but for all of the following turns you continue to concentrate on.)
• You can add your rage damage to any melee spell attack made while raging.