Endark Exploit

I just read about DRK's new endark http://wiki.ffxiclopedia.org/wiki/Endark spell and had a brainstorm. Imagine a DRK/nin with an offhand kraken or mercurial Kris and mainhand axe enchanted with endark. Such a DRK should be able to get in a lot if not 50 attacks in 30 seconds. That is up to 1250ish of extra dark damage with every casting of the spell. Plus damage from DoT and Rampage spam from the axe. Any bored rich bastard DRKs want to try this out and parse it? Should be great damage on very tough and lower mobs.