Rakdos Riteknife - 1/2

You gain a +1 bonus to attack and damage rolls
made with this magic weapon. Whenever you
slay a creature with an attack using the dagger,
the creature's soul is imprisoned inside the
dagger, and that creature can be restored to life
only by a wish spell. The dagger can hold a
maximum of five souls.
For each soul imprisoned in the dagger, your
attacks with it deal an extra 1d4 necrotic damage
on a hit. The dagger has the following additional properties.