Two fates, bound hands, blind sight.

You gain two abilities, and 2 drawbacks. 

• You gain the ability to cast a second concentration spell even when one is in effect. (Rules later in description) This does not also applies to held spells.
• You gain the ability to not have to auto succeed a concentration throw (If you want to) if hit by yourself or someone friendly as long as the action to harm you was not made in bad faith (They did not want to actively kill you or fatally hurt you in one way or another OR the act of harm was an accident) This also applies to held spells.
• When concentrating on a two spells, you lose the ability to cast spells that require either (Proclaimed when second spell that requires concentration is casted) Vocal or somatic components. This does not also applies to held spells.
• When concentrating on any spell it becomes incredibly hard to hide giving disadvantage on checks/saving throws to hide or conceal a spell as well as gives you a chance to fumble your spell and you have to make a concentration throw when trying to hide said concentration. This also applies to held spells.

You cannot concentrate on two of the exact same spells at one time with this feat (Like two cloud of daggers, or minor illusions). When concentrating on two spells, concentration acts still as if your only concentrating on one spell, 1 save, fail and both spells go down, succeed and both spells stay up. You can drop concentration on them one at a time.