Angus Beefpatty, Cleric of Laduguer

Duergar Resilience. The duergar has advantage on saving throws against poison, spells, and illusions, as well as to resist being charmed or paralyzed.

Sunlight Sensitivity. While in sunlight, the duergar has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Potent Cantrips. The spellcaster can add its spellcasting ability modifier to the damage it deals with any cantrip.

Spellcasting (Healer). The spellcaster’s spellcasting ability is Wisdom (spell save DC 15, +7 to hit with spell attacks). The spellcaster has following cleric spells prepared:

Cantrips (at will): guidance, light, resistance, sacred flame

1st level (4 slots): bless, cure wounds, shield of faith, sanctuary

2nd level (3 slots): aid, lesser restoration spiritual weapon

3rd level (3 slots): protection from energy, revivify, spirit guardians, beacon of hope

4th level (3 slots): banishment, death ward

5th level (1 slot): greater restoration

Adamantine War Pick. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 3) bludgeoning damage.

Enlarge (Recharges after a Short or Long Rest). 
For 1 minute, the duergar magically increases in size, along with anything it is wearing or carrying. While enlarged, the duergar is Large, doubles its damage dice on Strength-based weapon attacks (included in the attacks), and makes Strength checks and Strength saving throws with advantage. If the duergar lacks the room to become Large, it attains the maximum size possible in the space available.

Invisibility (Recharges after a Short or Long Rest). The duergar magically turns invisible until it attacks, casts a spell, or uses its Enlarge, or until its concentration is broken, up to 1 hour (as if concentrating on a spell). Any equipment the duergar wears or carries is invisible with it.