As a bonus action, a weapon that deals piercing or slashing damage that you touch thirsts for blood. For the duration, the weapon deals an extra 1d4 damage when it hits.
If the attack misses by 4 or less, the weapon deals half as much damage.
Alternatively, you can touch a quiver containing arrows or bolts, granting the ammunition pulled from it the same effect. The spell’s magic ends on a piece of ammunition when it hits or misses.
You can increase the damage by 1d4 for each additional mana or psi expended and an additional 1d4 for every other additional mana or psi expended.