Haven't used it, but I like it!

The most I would go is one Node, and that would leave points for a second Tyrant...the "issue" with one Tyrant is that it makes it easy for the foe to choose what to shoot. And you give up Warlord when it dies.
You might find your self facing First Blood, and Slay the Warlord, before you even get to take a turn.

That would be a fairly deep hole. That said, how can anybody not Love 6 Carnifexen, with special rules to buff them!
With a single Node I had Hormagaunts to provide a Screen, and a Veno to give Shrouding.

I also put Adrenals all around. That is a big point sink though.

If you get a chance let us know how it plays, because it looks like a blast.