Shade
Monster Junkie
I'm divided. It's got decent spell resistance and DR, but its attack adds and AC are pretty poor for that Challenge Rating.
But so is a 12th-level druid (CR 12), which it is, plus some serious size bonuses.
You've adjusted its hits, skills and attacks for its extra HD, but it's still short two Feats.
Indeed I did. Nice catch. Suggestions?