Transmuter

Medium humanoid (any race), any alignment
Armor Class 12 (15 with mage armor)
Hit Points 40 (9d8)
Speed 30 ft.
STR
9 (-1)
DEX
14 (+2)
CON
11 (+0)
INT
17 (+3)
WIS
12 (+1)
CHA
11 (+0)
Saving Throws Int +6, Wis +4
Skills Arcana +6, History +6
Senses passive Perception 11
Languages any four languages
Challenge 5 (1800 XP)
Spellcasting.
Transmuter's Stone.
ACTIONS
Quarterstaff.

This full creature's stat block is not available (not OGL).

Volo´s Guide to Monsters