Blood spike is PvP team build consisting of up to 8 Necromancers using Blood Magic spells such as Angorodon's Gaze and Vampiric Gaze to spike enemies. These skills are fairly effective, because traditional anti-spike skills, such as Protective Spirit and Spirit Bond, don't protect against life stealing. To compensate for the lack of Monks, each Necromancer brings a different defensive elite, along with skills of the same attribute. For example, one Necromancer might bring Word of Healing, a second would bring Restore Condition, while a third brings Divert Hexes.
Prior to the April 5th, 2007 update, Blood Spike teams included a Spirit spammer. The spirit spammer would constantly create new spirits, and as those spirits died, the Necromancers gained energy through Soul Reaping.