Oh, that's true. Ok, how far are you thinking? Somewhere in the 300 ft range?
+8/+12 bonus to Intimidate appeals, as does tremorsense 300 ft. and all-around vision.
Updated.
So, was it agreed upon it casting spells as a 20th-level sorcerer, with every spell in the SRD on its spells known list?
Did I miss anything else?
I'm not sure it should be archmage level.
What about making it a 15th level sorcerer rather than 20th?
The original monster had boughs that could attack targets up to 30 yards away (i.e. a 90 ft. Reach). Would you like to give it that, or average it to a 60 ft. Reach?
I suppose so, although 20th would cover the spells of the archmagi whose blood it consumed.![]()