After a battle which the user initiated (and survived), all enemies within a two tile radius of the user lose 20% of their max HP. Savage Blow's effect cannot kill an enemy and enemies whose HP is lower than or equal to the amount they would lose; they have their HP reduced to 1. It is learned by Malig Knights at Level 5 or higher.
Savage Blow can be combined with both Grisly Wound and Poison Strike which can further increase damage against nearby opponents. Combining these skills makes the user extremely dangerous; the main target will lose 60% of their health if they survive the battle, while nearby opponents in a two-tile radius of the user take 20%.