Like the other cheap lieutenants, this is at its best when you can curve into it after playing a cheap commander like Fblthp, the Lost, guaranteeing the first card right away
Nova Hellkite Flying, haste, and a builtin ping make Nova Hellkite a flashy finisher that can warp in early for surprise damage then return later for a second strike
Unlike Cradle it is a colourless source early and does mean you might not be able to play all the other colourless land you might want
A two-mana Commander means you can reliably start your engine early, redeploy her easily after removal, and keep pressure on the table without ever having to sink all your resources into getting her back online
Just how much, however, remains to be seen
It just means you get max benefit most of the time, which isnt how I think the card should play