C5 The Bane of Llewellyn in the tower of a dead pun and puzzle obsessed wizard
8. The area is a 60-foot-square room with a 30-foot-high ceiling. Facing the party is a 10-foot-wide stairway leading up to a portico flanked by four Corinthian columns. All the stonework is of white marble. Seated upon a throne within the portico is a man of noble visage, dressed in a white garment, trimmed with purple, a portion of which is draped over his left arm, leaving the right bare. His head is crowned with a laurel wreath, and his right hand is adorned with a ring set with a large gem.
The man is a green slaad.
It is using its polymorph self ability to appear as a human or, in this case, a caesar slaad.