Here’s my version of an Elder Brain… a mind flayer city’s god-like center of attention.
I made it a Challenge 22 legendary creature, with lair and regional effects. It spawns a brain golem, a challenge 5 creature with mind blasting powers as well as slam attacks. This can make for a dangerously nasty encounter.
Let me know what you think!
www. Newbie DM .com 
sakutian
September 25, 2015
Reblogged this on Out of Character.
Nerdarchy
September 25, 2015
Woe betide the party in this encounter! I between the Elder Brain and his UP TO THREE Brain Golems, it’s gonna be one heck of a fight!
Christopher LaHaise
October 1, 2015
Love it. Well done. 🙂
Silverwizard
March 7, 2017
I’ve now officially been using this in my Spelljammer game (at the Patron for a PC warlock!) And I gotta say – these stats make it suitably terrifying – but the lower level brain golems make it the whole thing excellent
newbiedm
March 7, 2017
Awesome! I love this monster.,