Vampire
Causes ordinary enemies to explode, damaging others nearby; bosses take heavy damage rather than detonating. Reported in the July build at three Activation Charges and 25% of Coen's health.
Costs are from the July build and may not survive to retail. The Corruption gate is corroborated by hands-on coverage, which states that some Vampirism skills require a level of Corruption to purchase — but no threshold is published for this node or any other.