3.222 You may use Mighty Blow on either Armor or Injury roll, or on both. To do so, you must announce this prior to throwing the block.

3.223 You may take Mighty Blow if your Strength is less than 3, but you may not use the skill until your strength is 3 or better.

3.224 Horns only adds to your Strength when determining how many block dice to use. It does not allow you to use Mighty blow if your ST is normally 2 or less.