The humble scrag

[Whizbang Dustyboots]

If a scrag cannot get to a source of water -- i.e. they're not encountered completely submerged in water -- how much would it lower their CR?

 

[Shade]

I'd recommend dropping them by one CR. All they are really losing is regeneration, and are slightly slower. It's still just as tough as a forest troll (MMIII) at CR 4, so I wouldn't go any lower.

 

[Olgar Shiverstone]

Scrags already seem a bit weak at current CR. I wouldn't drop them more than one.