Me and my friend also tested out an interesting concept with the perk (the name escapes me) that allows all enemies tethered to take a portion of damage that the original receiver takes. My friend (after I had tethered the entire team) used his stormytrance. It that moment he killed six people instantly. Let me explain why. The lighting from the stormtrance chains based on proximity. All were close enough to where they could all be damaged. Each person was a recipient so each person was both taking massive damage and distributing it. TLDR: nightstalker-+stormcaller =instant death