Bara api

An experimental device that converts kinetic energy from impacts into a temporary surge of power. When the user takes bludgeoning damage, they can use a reaction to store half of the damage as kinetic energy, which can be used to enhance their next Strength-based attack roll. As a reaction, store half of the damage from a bludgeoning attack as kinetic energy. On your next turn, add stored damage to a Strength attack. The stored energy dissipates at the end of the turn.