Celebror

Cloak of Protection. Celebror has a +1 bonus to saving throws.

Defensive Field (6/day). As a bonus action, Celebror gains 11 temporary hit points, replacing any temporary hit points he already has. Celebror loses these temporary hit points if he doffs the armor.

Fey Ancestry. Celebror has advantage on saving throws against being charmed, and magic can't put him to sleep.

Warcaster. Celebror has advantage on Constitution saving throws that he makes to maintain his concentration on a spell when he takes damage.

Spellcasting. Celebror is an 11st-level spellcaster. His spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks) or Wisdom (spell save DC 16, +8 to hit with spell attacks). Celebror has following cleric and artificer spells prepared:

Cantrips (at will): light, sacred flame, thaumaturgy

1st level (4 slots): cure wounds, disguise self, magic missile, shield / sanctuary, searing smite

2nd level (3 slots): invisibility, mirror image, shatter / heat metal, spiritual weapon, vortex warp

3rd level (3 slots): blink, dispel magic, flame arrows, haste, hypnotic pattern, lightning bolt, tiny servant, / magic circle, meld into stone, remove curse, sending, spirit guardians

4th level (3 slots): death ward, greater invisibility

5th level (2 slots):

6th level (1 slot):

Multiattack: Celebror can make two attacks with his warhammer.

Warhammer Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 4) bludgeoning damage.

Spell Storing Item (4/day). Celebror can cast sanctuary from his warhammer. He must maintain concentration.

Flash of Genius (4/day). When Celebror or another creature he can see within 30 feet of him makes an ability check or a saving throw, he can use his reaction to add +4 to the roll.

Shield (5/day). Celebror casts shield.

Warcaster. When a hostile creature's movement provokes an opportunity attack from Celebror, he can use his reaction to cast a spell at the creature, rather than making an opportunity attack. The spell must have a casting time of 1 action and must target only that creature.