Need help with Poorman's Morcs

[Fierce]

I've decided to build a Morc deck in the Poorman's format and need some input. I'm thinking of using a 30-30 deck:

Morgul Ambusher x4
Morgul Creeper x4
Morgul Lurker x4
Morgul Whelp x4
Streaming to the Field x2 (for initiative)
Maybe a couple of Enquea LoM for crowd control.

I need a threat adder (thinking about a Gollum + Captured By the Ring x4) and a burden adder. The burdens may be hard to get so a possibility is to ditch the Creepers for Morgul Destroyer x4 and some Nazzies.

Any suggestions will be most appreciated!