Death’s Reckoning

As an action, slam the staff into the ground, unleashing a massive shockwave imbued with necrotic energy.  All creatures within a 50-foot radius must make a DC 20 Dexterity saving throw. On a failure, creatures take 12d10 necrotic damage and are paralyzed until the end of their next turn. On a success, they take half damage and are not paralyzed. This ability drains the wielder significantly. After using Death’s Reckoning, you take half the total damage dealt (before reductions) and lose two levels of exhaustion. You cannot use this ability again until seven days have passed, and casting it a second time within those seven days risks aging you 1d10 years.