Hemophagic Superiority

After braving the shadows of the Echo Lands and not giving in to it's corruption, your blood has been alchemically altered beyond the realm of normal, granting you a unique effect. You are now able to bring the altered shadow blood to curse your blade, guided by your mind as each strike weakens your foe with death and decay.

Weapons with an active crimson rite use intelligence for attack and damage rolls, on hit inflicting a -1 to attack and saves rolls, stacks up to your Proficiency Bonus, lasting till the end of your next turn.