Talk:Nidus/@comment-85.76.164.59-20170106140857/@comment-30825846-20170106194314

As per the page entry on Virulence: As long as you hit at least 4 enemies per cast, the ability pays for itself, regardless of energy cost. Do that and the only thing you're paying for is Larva, which only costs 38 energy with -55% efficiency - cheap enough to be sustained by a 150 energy cap (especially with Rage).
 * Energy refund is inversely affected by Power Efficiency because it is always 25% of energy used to cast, per enemy.

Regardless, the page isn't saying Flow is NOT useful, but that it's less useful, which is true.