Finally got to introduce my players to their new ally ... a colossal mimic who colonized a cave system.
The mimic previously ingested a high-level gnome illusionist, which had given rise to certain unexpected enhancements as the two personalities merged. It used a combination of physical traps (created by its duergar servants), illusions, and sculpting its own mass to test the characters.
I think it was just the right kind of weird for the #ElementalApocalypse campaign.
