Fighting Style-Desperation

This fighting style is about teaching one how to react when all the chips are down. When you activate this stance (level 4) you Focus on 1 opponent, get a -4 to basic attack rolls, but whenever you take damage from focused opponent you are granted an immediate counter-attack against that opponent, using their damage roll, once per short rest, lasts till target(s) die. When one watches their opponent they know how to strike back.

As the fighter improves a skill such as this it takes less time to focus an learn an opponents moments and attacks. When you activate this stance (level 8) you focus on 2 opponents, get a -2 to basic attack rolls,  whenever you take damage from focused opponent you are granted an immediate counter-attack against that opponent, using their damage roll.

When you activate this stance (level 12) you focus on 2 opponents, get a -2 to basic attack rolls only to non-focused opponents, whenever you take damage from focused opponent you are granted an immediate counter-attack against that opponent, using their damage roll + 1d6, twice per short rest.

When you activate this stance (level 16) you focus on 3 opponents, whenever you take damage from focused opponent you are granted an immediate counter-attack against that opponent, using their damage roll + 2d6.

When you activate this stance (level 20) you focus on 4 opponents, get a +2 to basic attack rolls against focused targets , whenever you take damage from focused opponent you are granted an immediate counter-attack against that opponent, using their damage roll + 3d6 4 times per short rest.