Necrotic Boneplate Armor

2 pieces: (2) Set: When an attack drops your health below 35%, one of your Blood Runes will immediately activate and convert into a Death Rune for the next until canceled. This effect cannot occur more than once every 45 sec.

4 pieces: (4) Set: Your Vampiric Blood ability also affects all party and raid members for 50% of the effect it has on you.