sword of the blood master

equipped creature gets -2/+5 first strike and deathtouch.
If this dies with a creature, exsile this artifact.
equip {b/r}{b/r}{b/r}{b/r}{b/r}(use once a turn)
It has taken years of training, but I have lurd that you
must strike first with poison then hold out till death.
-The blood samurai