Blood Rush

You gain the power to sacrifice your own blood to imbew yourself with a rush of energy, turning pain into power.

As a bonus action you can damage yourself and offer some blood to fall into a Blood Rush lasting for 1 minute.

Roll a die equal to twice your Proficiency Bonus (PB of 2 = D4, PB of 3 = D6,...). 

• You take damage of the rolled amount.
• You add half of the rolled number to your AC and Attack rolls for the duration.
• You have disadvantage on all Wisdom related checks and saving throws

While in Blood Rush you have to maintain concentration, pushing through the pain and power you are feeling. Casting a spell that requires concentration or failing a concentraiton check after taking damage will end Blood Rush.

You can also end it early on one of your turns (No action required).

This feature can be used twice between long rests.