Spellcasting. The mage is a 12th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). The mage has the following wizard spells prepared:

Cantrips (at will): ray of frost, light

1st level (4 slots): chromatic orb, mage armor, magic missile, shield

2nd level (3 slots): misty step, hold person

3rd level (3 slots): counterspell, sleet storm, fly

4th level (3 slots): greater invisibility, ice storm

5th level (2 slot): cone of cold

6th level (1 slot): Wall of Ice 

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