Karl

You can enter a berserker rage, which lasts for the duration of an encounter. While enraged, you do not receive penalties to your rolls from accruing wounds and you have disadvantage on defense checks. If damage would place you on death's door, make an escalating Mighty check (TN 9) to remain conscious each round. You will not stop attacking your foes, even if your life is in danger, until the final foe falls. You have disadvantage on Deft.

You may make an attack on your turn as a bonus action. This attack is made with disadvantage. As long as you have MP, you may use any attack available to you in the round as a reaction against your opponent if they attempt to disengage from your personal space, once per opponent. Such attack rolls are made with advantage.

The dark history of your misdeeds follow you wherever you go. As long as you have MP, you may radiate an aura of fear that confers disadvantage on attack rolls against you. For 2 MP, you may force your opponent to make an opposed Mighty check or else they must carry out a single action you command. Your victims cannot be commanded to perform suicidal actions or actions that would knowingly endanger them.