I've played with such Nightmare half (with Eadh instead of Phyllis but I guess your version is better since mine seemed to lack damages although it wasn't what I was aiming for anyway) and I have to say the combination of Azel & Pan (with or without fury) can prove deadly Hehe I'm partial to Azel to I'll say she's a very underrated card and should be seen more often. Usually I'd use these cards with Jungos and throw in some DRs, then try to create f life gaps. Radek is good (when he's got his bonus) for that because he's strong and unconspicuous for those who underestimate him; Scopica too.
Also, lately, I'm playing Vortex a lot and cards like Dagg & Deea are great too in half decks
There's a lot of different choices. If you're more of a defensive player, try a Roots half with it. Something like Yookie, Arno, Jeena and Rosen. That leaves you with a star to play around with for either half. Maybe up Mawpin or phyllis to Edwin to make it 25 stars.