Lurking Specter's Shadeweave

2 pieces: (2) Set: Each 10 energy you spend grants Natureblight, granting 1.0% attack speed and 1.0% Nature Damage for 6 sec. Multiple instances of Natureblight may overlap, up to 12.

4 pieces: (4) Set: Envenom additionally empowers itself, causing an Envenomous Explosion dealing 32 Nature damage to all nearby enemies when cast with Envenom active. Deals reduced damage beyond 5 targets. If Envenomous Explosion deals damage to a single target, it is increased by 30%.