Estimating the cohort level of an RoW monster

[Darrell Impey UK]

I'm after advise and help calculating the equivalent cohort level for a Greater Witchcrow (long story), anyone willing to help?

My thinking:
5HD.
Hexing ability of a 5th level witch.
Spell casting ability roughly equivalent to a 4-5th level witch.
Cold resistant 5.
Reasonable melee attack.
Can fly.

So; take 5th level as a base, then add additional levels for flight 2(?), cold resistance 1(?), and the attack 1 (?).

Does 9th sound about right to people?

[Adam Daigle]

9th sounds a bit high. I'd probably peg it around 7th. At that level you can get a howler or a shae. At 8th, you can get an aranea, so 7th feels good. You could maybe argue for 6th.

[Darrell Impey UK]

Looking at the other monstrous cohorts, everything that can fly add at least 2 leveks onto its CR, I was figuring that the others haf to cost something too...

[Darrell Impey UK]

Ok, I've done some mucking about, trying out advancing the thing with additional HD and class levels to see what happens, and I'm going to work at CR+2 for its level equivalent. Thanks for the input. :)