Chillbringer

Dark Devotion. The Chillbringer has advantage on saving throws against being charmed or frightened.

Divine Dictate. As a bonus action, the chillbringer can expend a spell slot to magically deal an extra 9 (2d8) cold damage to the target on a hit. This benefit lasts until the end of the turn. If the chillbringer expends a spell slot of 2nd level, the extra damage increases to 13 (3d8) cold damage.

Spellcasting. The Chillbringer is a 2nd-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 13, +5 to hit with spell attacks).

The Chillbringer has following spells prepared:
Cantrips (at will): blade ward, frostbite, ray of frost
1st level (4 slots): armor of agathys, frost fingers, healing word, ice knife
2nd level (3 slots): augury, lesser restoration, Snilloc’s snowball swarm

Multiattack. The Chillbringer casts a cantrip, then can make one attack with its shortsword.

Shortsword. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit:  5(1d6+2) piercing damage.

Ice Shield. As a reaction to being targeted by an attack, the Chillbringer causes a sheet of ice to form between it and the triggering attack, raising its AC by 2 until the end of his next turn. If the attack still hits, it reduces the damage from the attack by 5(2d4).