Variant Adrenaline 2.0

This Feat is a Feat for Variant Human Exclusively. (The lore reason behind this is to make "Variant" human actually sound like a variant.)

When you are at low health, you can activate Variant Adrenaline to modify the damage of attacks by changing your usual 1-2 D6 attack dice to a 1-3 D8 (depending on level) and then adding the resulting number of the attack roll to your strength modifier; and lastly dividing that by 2.5. 

This feat lasts for 3 attack turns and cannot be used again in combat until after a long rest. 

Example: 7 (ATK Roll) + 15 (STR Mod.) = 22 / 2.5 = 8.8 = 9 hit points of damage.