Casin Al'dar

Legendary Resistance (2/day). When Casin fails a saving throw, he may use a legendary resistance and choose to succeed instead.

Action Surge (Recharge after Short/Long rest). The eldritch zealot can take one additional action on its turn. The feature can only be used once per short/long rest.

Spellcasting. The eldritch zealot is a 13th-level caster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). The eldritch zealot has the following wizard spells prepared:, which he can cast without somatic or material components:

Cantrips (at will): create bonfire, toll the dead
1st level (4 slots): shield, snare, burning hands
2nd level (3 slots):scorching ray, shatter
3rd level (2 slots): fireball,counterspell
*Evocation or abjuration wizard spell

Arcane Warrior. When a hostile creature's movement provokes an opportunity attack from the eldritch zealot, they can use their 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. In addition, when the eldritch zealot uses its action to cast a cantrip, it can make a weapon attack with its glaive as a bonus action.

Dimension Stone. Casin possesses a unique one time use item known as a dimension stone. As an action he can break the stone in his hands and teleport up to 500 feet as if casting the Dimension Door spell. However, Casin cannot take another with him during this teleportation.

Distracting Strikes. Casin does not provoke opportunity attacks from a creature, as long as he has made a melee attack against that creature during his turn. The attack does not need to hit.

Multiattack. The eldritch zealot makes three melee attacks with his glaive.

Glaive. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 4) slashing damage. 

Bonded Weapon. The eldritch zealot's bonded weapon is its glaive. It can't be disarmed as long as it is wielding its glaive. As a bonus action, the eldritch zealot can summon its glaive to its hand

Pommel Strike. When Casin takes the Attack action on his turn, he may use his bonus action to make a pommel strike, as long as he is wielding a polearm. This pommel strike does 1d4 +5 bludgeoning damage and has a +9 to hit.

Polearm Master. Creatures provoke opportunity attacks when they enter Casin's reach.

Casin has 2 Legendary actions, which he may only use at the end of another creatures turn. Casin regains expended legendary actions at the start of his turn.

Animate Dead (2 actions). Casin calls upon the Amulet of Undeath and uses it to cast the Animate Dead spell if it has the necessary charges to do so (see item description).

Sweeping Attack (2 actions). Casin sweeps his weapon out in a large arc hitting up to 3 creatures within his weapon reach. The creatures must be adjacent to each other.

Bolster Allies. Casin yells out encouragement to his allies. Until the end of Casin's next turn, all allies that can hear him, and within 30 feet have advantage on their next attack roll.