Transmuter's Stone. The transmuter carries a magic stone it crafted. The stone grants it one of the following benefits while bearing the stone; the transmuter chooses the benefit at the end of each long rest:

• The transmuter has darkvision out to a range of 60 feet.
• The transmuter has proficiency in Constitution saving throws.
• The transmuter has resistance to acid, cold, fire, lightning, or thunder damage (transmuter's choice whenever choosing this benefit).
• The transmuter's walking speed is increased by 10 feet.

Spellcasting. The transmuter casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 14):

At will: light, message, prestidigitation

1/day each: telekinesis

2/day each: fireball, hold person, knock, mage armor, polymorph, slow

Multiattack. The transmuter makes three Arcane Burst attacks.

Arcane Burst. Melee or Ranged Spell Attack: +6 to hit, reach 5 ft. or range 120 ft., one target. Hit:19 (3d10 + 3) acid damage.

Transmute (Recharge 4–6). The transmuter casts alter self or changes the benefit of Transmuter's Stone if bearing the stone.