Transmuter's Stone. The transmuter carries a magic stone it crafted that grants its bearer one of the following effects:

Darkvision out to a range of 60 feet

An extra 10 feet of speed while the bearer is unencumbered

Proficiency with Constitution saving throws

Resistance to acid, cold, fire, lightning, or thunder damage (transmuter's choice whenever the transmuter chooses this benefit)

If the transmuter has the stone and casts a transmutation spell of 1st level or higher, it can change the effect of the stone.

Spellcasting. The transmuter is a 9th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). The transmuter has the following wizard spells prepared:

Cantrips (at will): light, mending, prestidigitation, ray of frost

1st level (4 slots): chromatic orb, expeditious retreat*, mage armor

2nd level (3 slots): alter self*, hold person, knock*

3rd level (3 slots): blink*, fireball, slow*

4th level (3 slots): polymorph*, stoneskin

5th level (1 slot): telekinesis*

*Transmutation spell of 1st level or higher

Quarterstaff. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit:2 (1d6 - 1) bludgeoning damage, or 3 (1d8 - 1) bludgeoning damage if used with two hands.