Kasimir Velikov

Kasimir has advantage on saving throws against being charmed, and magic can't put the him to sleep.

Kasimir wears a ring of warmth and carries a spellbook containing all the spells he has prepared plus the following spells: arcane lock, comprehend languages, hold person, identify, locate object, nondetection, polymorph, protection from evil and good, ray of frost, and wall of stone.

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

• Cantrips (at will): fire bolt, light, mage hand, prestidigitation
• 1st level (4 slots): detect magic, mage armor, magic missile, shield
• 2nd level (3 slots): misty step, suggestion
• 3rd level (3 slots): counterspell, fireball, fly
• 4th level (3 slots): greater invisibility, ice storm
• 5th level (1 slots): cone of cold

Melee or Ranged Weapon Attack: +5 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

Any spellcaster that can cast the find familiar spell (such as an archmage or mage) is likely to have a familiar. The familiar can be one of the creatures described in the spell (see the Player's Handbook) or some other Tiny monster, such as a crawling claw, imp, pseudodragon, or quasit.