Talk:Perpetual Vortex/@comment-174.54.100.25-20150416002002

Without Perpetual Vortex: 2 vortexes, with 100% duration, for 100% energy cost each.

With Perpetual Vortex: 1 vortex, with 70% more duration, for 100% energy cost each.

...so what is the upside of this, exactly?