Power Attack

You enter a stance where your blows hit harder but are less accurate. When using a 1h weapon your attacks deal additional damage equal to your proficiency bonus, but you take a penalty to hit equal to half your proficiency bonus (rounded down).

For example at 1st-4th levels you would gain a +2 damage bonus but take a -1 penalty to hit. From 5th-8th levels you would gain +3 damage but take a -1 penalty to hit. From 9th-12th levels you would gain a +4 bonus to damage but take a -2 penalty to hit. From 13th-16th levels you would gain a +5 bonus to damage but take a -2 penalty to hit. From 17th-20th levels you would gain a +6 bonus to damage but take a -3 penalty to hit.