Alphus the Mad

Special Equipment. Alphus wields an Infernal Scrap Greataxe and the Shield of the Hidden Lord, and wears Infernal Scrap Plate which grants +2 on all saving throws (not included above).

Shield of the Hidden Lord. The Shield of the Hidden Lord has 3 charges and regains all charges at dawn. Alphus can cast the following spells from the shield by expending the specified number of charges (spell save DC 21): fireball (1 charge) and wall of fire (2 charges).

Infernal Scrap Plate. While Alphus wears Infernal Scrap Plate armor, he has resistance to cold and fire damage, is unharmed by temperatures as low as −130 degrees Fahrenheit (-90 Celsius) or as high as 212 degrees Fahrenheit (100 Celsius), is immune to any spell or effect that would alter his form, and has disadvantage on Stealth checks.

Superior Darkvision. Alphus is of drow ancestry and can see in dim light (shades of gray) within 120 feet of him as if it were bright light, and in darkness as if it were dim light.

Magic Resistance. Alphus is of yuan-ti ancestry and has advantage on saving throws against spells and other magical effects.

Great Weapon Superiority. Alphus can wield heavy weapons with a single hand, and can reroll a 1 or 2 on damage dice with heavy weapons. When he makes a melee attack with a heavy weapon, he can choose to take a -5 penalty to the attack roll to deal an extra 10 damage if it hits.

Heavy Armor Master. While Alphus is wearing heavy armor, bludgeoning, piercing, and slashing damage that he takes from nonmagical attacks is reduced by 3.

Shield Master. While Alphus isn't incapacitated, he can add his shield's AC bonus to any Dexterity saving throws he makes against effects that target only him.

Infernal Health. Alphus is immune to disease.

Aura of Tyranny. While Alphus isn't unconscious, he grants all friendly creatures (including himself) within 30 ft. a +5 bonus to all saving throws (not included above), immunity to the frightened condition, and all frightened creatures within 30 ft. have their speed reduced to 0 and take 10 psychic damage if starting their turn in the aura.

Scornful Rebuke. If Alphus isn't incapacitated and a creature hits Alphus with an attack, it takes 5 psychic damage.

Infernal Smite. When Alphus hits with a melee weapon attack, he can expend one spell slot to deal an extra 9 (2d8) fire damage to the target plus 4 (1d8) for each spell level higher than 1st (max 5d8) and plus 1d8 against undead or fiends (max 6d8 total).

Hellfire Strikes. Whenever Alphus hits with a melee weapon attack, the target takes an extra 4 (1d8) fire damage.

Guided Strike (1/Short or Long Rest). When Alphus makes an attack roll, he can choose to gain a +10 bonus to the roll.

Spellcasting. Alphus is a 20th-level spellcaster. His spellcasting ability is Charisma (spell save DC 19, +11 to hit with spell attacks). He has the following paladin spells prepared:

1st level (4 slots): armor of agathys, command, cure wounds, searing smite, shield of faith, thunderous smite, wrathful smite

2nd level (3 slots): branding smite, find steed (summons a Devil's Ride), hold person, spiritual weapon

3rd level (3 slots): aura of vitality, bestow curse, blinding smite, fear, spirit shroud

4th level (3 slots): dominate beast, stoneskin

5th level (2 slots): cloudkill, dominate person, wrathbreak 

Multiattack. Alphus makes two attacks with his greataxe or shield.

Infernal Scrap Greataxe. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 13 (1d12 + 7) slashing damage, and an extra 4 (1d8) fire damage from Hellfire Strikes. On a roll of 20, the weapon releases a burst of hellfire and the target takes an extra 9 (2d8) fire damage and catches fire, and it takes an additional 4 (1d8) fire damage on its next turn unless it uses its action to put out the fire.

Shield Bash. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 9 (1d4 + 7) bludgeoning damage, and an extra 4 (1d8) fire damage from Hellfire Strikes. The target must succeed on DC 19 Strength saving throw or be knocked prone.

Conquering Presence (1/Short or Long Rest). Each enemy within 30 ft. of Alphus must succeed on a DC 19 Wisdom saving throw or be frightened for 1 minute. The frightened creature can repeat this saving throw at the end of each of its turns, ending the effect on itself on a success.

Cleansing Touch (5/Long Rest). Alphus can end one spell on himself or on one willing creature that he can touch.

Infernal Sense (6/Long Rest). Until the end of Alphus's next turn, he can sense anything affected by the hallow spell or know the location of any celestial, fiend, and undead within 60 ft. that is not behind total cover.

Lay on Hands (100 hit points/Long Rest). Alphus can touch a creature to restore any number of hit points remaining in the pool, or 5 hit points to either cure a disease or neutralize a poison affecting the creature.

Invincible Conqueror (1/Long Rest). Alphus can gain resistance to all damage, he can make one additional attack as part of the Attack action on his turn, and his melee weapon attacks score a critical hit on a roll of 19 or 20 for 1 minute.

Fey Step (1/Short or Long Rest). Alphus is of eladrin ancestry and as a bonus action, he can magically teleport up to 30 ft. to an unoccupied space he can see. Immediately after he uses Fey Step, each creature of his choice that he can see within 5 ft. of him takes 5 fire damage.

Momentum. When Alphus scores a critical hit with a melee weapon or reduces a creature to 0 hit points with one, he can make one melee weapon attack as a bonus action.

Charger. When Alphus uses the Dash action, he can use a bonus action to make a melee weapon attack or Shove a creature. If he moves at least 10 ft. in a straight line before using this bonus action, he either gains a +5 bonus to the damage roll if the melee weapon attack hits or pushes the target up to 10 ft. away from him if the Shove succeeded.

Shield Shove. If Alphus takes the Attack action on his turn, he can use a bonus action to try to Shove a creature within 5 ft. of him with his shield.

Brace. When a creature Alphus can see moves into melee weapon reach, he can use his reaction to make one attack against the creature.

Shield Evasion. If an effect allows half damage on success, Alphus can use his reaction to take no damage.

Vengeful Reprisal. If Alphus is attacked while wielding Infernal Scrap Greataxe, he can use his reaction to make an attack against his attacker. If the attack hits, it deals an additional 5 (1d12) slashing damage.