Savage Attacker Improved edition

This warrior has mastered to make a brutal strike with his melee weapons. When he swings his blade, their foe will tremble for the impact which is incoming.

Prerequisite: Strength or Dexterity score of 13 or higher.

• Increase your Strength or Dexterity score by 1, to a maximum of 20.
• Once per round when you roll damage for a melee weapon attack, you can re-roll the weapon its damage dice and choose the higher result.
  If the second weapon damage roll is equal or lower than the initial  weapon damage roll, you add half weapon die to the damage total for this roll.
• Once per Short or Long Rest on a critical hit on a melee weapon attack, you may re-roll the weapon damage dice and add 1/4 x number damage dice rolled if (re-roll<=initial roll)

What is half damage die bonus?

• 1-3d4 : +2
• 1-2d6 : +3
• 1d8    : +4
• 1d10  : +5
• 1d12  : +6

So for example you are fighting with a 1d8 weapon and you rolled 5 for damage. You choose to use the Savage Attacker re-roll and the second roll is a 3 which is lower or equal to 5. Granting you +4 bonus damage for a total of 7 (=3+4). In this case granting you a +2 bonus damage instead of nothing.

What is quarter damage dice rolled?

• 2d6: +3 | 3d6: +5 | 4d6: +6 | 5d6: +8  | 6d6: 9
• 2d12: +6 | 3d12: +9 | 4d12: +12 | 5d12: +15