Warlord Goblin King

Legendary Resistance. If Warlord Goblin King fails a saving throw, he can choose to succeed instead.

Martial Advantage. Once per turn, the hobgoblin can deal an extra 6 (2d6) damage to a creature it hits with a weapon attack if that creature is within 5 feet of an ally of the hobgoblin that isn't incapacitated.

Spirit of Kas. While the sword is on your person, you add a (1d10) to your initiative at the start of every combat. In addition, when you use an action to attack with this sword, you can transfer some or all of its attack bonus to your Armor Class instead. The adjusted bonuses remain in effect until the start of your next turn.

Spell Casting. +11 to Hit. Spell Save DC 19

Spells

The Warlord Goblin King can use up to 5 per day that would normally require a spell slot. While the Warlord Goblin King is in possession of the Philosopher's Stone it can casts spells without the any restrictions.

Cantrips
Acid Splash, Chill Touch, Fire Bolt, Mage Hand, Minor Illusion

1st Level Spells (4/day)
Magic Missile, Charm Person, Burning Hands, Thunderwave

2nd Level Spells (3/day)
Magic Weapon, Scorching Ray, Suggestion, Misty Step

3rd Level Spells (3/day)
Animate Dead, Fireball, Remove Curse

4th Level Spells (3/day)
Black Tentacles, Dimension Door, Hallucinatory Terrain

5th Level Spells (3/day)
Arcane Hand, Dominate Person

6th Level Spells (2/day)
Otto's Irresistible Dance

7th Level Spells (2/day)
Teleport

8th Level Spells (1/day)
Maze

Multi Attack. The Warlord Goblin King can make either 3 sword attacks or 1 sword attack and 1 shield attack.

Sword of Kas. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 12 (1d8+8) slashing damage, or 13 (1d10+8) slashing damage if used with two hands.

Sword of Kas is a magic, sentient longsword that grants a +3 bonus to attack and damage rolls made with it. It scores a critical hit on a roll of 19 or 20, and deals an extra 2d10 slashing damage to undead.

Shield Bash.  Melee Weapon Attack:1d20+11 to hit, reach 5 ft., one creature. Hit: 7 (1d4+11) bludgeoning damage. If the target is medium or smaller, it must succeed on a DC 14 Strength saving throw or be knocked prone.

Misty Step(2nd)

Opportunity Attack. You can make an opportunity attack when a hostile creature that you can see moves out of your reach. To make the opportunity attack, you use your reaction to make one melee attack against the provoking creature. The attack occurs right before the creature leaves your reach

Parry. When another creature hits you with a melee attack, you can use your reaction to parry the attack reducing the damage to 0.

Misty Step(2nd)

The Warlord Goblin King can take 3 legendary actions. Only one legendary action option can be used at the end of another creature's turn. The Warlord Goblin King regains spent legendary actions at the start of its turn.

Misty Step(2nd) can only be casted if he is in possession of the Philosopher's Stone.

Legendary Recovery. If Warlord Goblin King uses a reaction, he can choose to recover that reaction. Using this does not recover the legendary action spent until the start of his next turn.

Legendary Double Tap. The Warlord Goblin King can make an attack with its sword and shield.