Crag

War Bond. Crag can't be disarmed and can summon his sword to his hands with a  bonus action.

Legendary Resistance(3/Day) When Crag fails a saving throw, he can choose to succeed instead.

Murderous Benefits.  When Crag reduces a Creatures hit points to 0, he gains an additional Action Point.

Spellcasting. Crag has the following spells Spells prepared and uses intelligence as the spellcasting modifier +10 to hit, Spell Save DC 18.

3/Day Each: Shield, Absorb Elements, Silvery Barbs, Ray Of Sickness(2nd Level), Counterspell

2/Day Each:  Slow, Haste, Sleet Storm, Crown Of Madness.

1/Day Each: Sunburst, Disintegrate, Power Word Fortify.

Multiattack. Crag Makes 3 attacks, able to use Mindmelding sword and Foul Blast interchangeably. Alternatively you can use a use of Spellcasting and then make 1 Mindmelding sword or Foul Blast attack.

Mindmelding Sword. Melee Weapon Attack: +13 to hit, reach 5 ft or 20ft/60ft Thrown, 1 target. Hit: 14 (1d8 + 10) [Slashing] damage plus 11 (2d10) [Thunder] damage, as part of the attack roll, if the sword was thrown crag can teleport to wherever he threw the sword..

Foul Blast. Ranged Magic Attack: +10 to hit, range 90 ft., 1 target. Hit: 26 (6d6 + 5) [Necrotic] damage, a creature hit by this has the Blinded Condition until the start of Crags Next turn.

Corner And Kill(Recharge5-6).  Crag knows how to beat someone down who is at their best, make a Mindmelding Sword attack roll at advantage against a creature  within range, that is not bloodied and is at least 15ft away from any ally. If the attack hits, roll damage for Mindmelding Sword, plus 77 (14d10) [Slashing] Damage. Additionally, if the creature is reduced to 0 Hit points, they die.

Second Wind(4/Per Day). Use a Bonus action to regain 1d10+14 Hit Points.

Riposte. When a creature misses a melee attack roll against crag, he can make 1 Mindmelding sword attack against the creature which missed.

Crag has 3 Legendary actions, he can use these at the end of any creatures turn during combat and they recharge at the beginning of his turn.

Attack (Costs 1 Actions). Crag Makes 1 Foul Blast or Mindmelding Sword Attack Roll.

Spellcasting (Costs 2 Actions). Crag uses a Spell from his Spellcasting Feature.

Bulwark Fortifications. (Costs 3 Actions). Crags Magic forms a Bulwark of Defence around him. Until the Beginning of His next turn he gains the following benefits, Gains a +1 to AC, Gains resistance to Slashing, Piercing and Bludgeoning damage, any creature that hits crag with an attack roll takes 2d8 Psychic Damage.