Cult of the Dragon Hand

Draconic Resistance(1/day). Upon failing a saving throw, the Cult of the Dragon Hand can choose to succeed instead. It also regains one expended spell slot.

Tiamat's Favor. Once each turn, the Cult of the Dragon Hand can add a d8 to an attack roll, ability check, saving throw, or damage roll of its choice.

Magical Attacks. The Hand's attacks count as magical for the purpose of overcoming resistance.

Magical Resistance. The Hand has advantage on saving throws against spells and magical effects.

Draconic Pact The Hand's spells are automatically cast at its highest available spell slot.

Draconic Devotion. The Cult of the Dragon Hand has advantage on saving throws against being charmed or frightened.

Spellcasting. The Cult of the Dragon Hand is a 12th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). 

Cantrips: Eldritch Blast(see below), Thaumaturgy, Guidance

5th Level Spells(3 slots): Hex, [Tooltip Not Found], Dimension Door,Spirit Guardians

Multiattack The Cult of the Dragon Hand can make two attacks with its Pact Blade.

Pact Blade. Ranged Spell Attack: +9 to hit, 5ft., one target. Hit: 10 (1d10+5) slashing damage + 5(1d8) force damage.

Eldritch Blast. Ranged Spell Attack: +9 to hit, 300ft., one target. Hit: 11 (1d10+5) force damage. This attack hits three times against the same or separate targets. This attack is considered to be a cantrip.

Tiamat's Bestowal (Recharge 5-6)

When available, the Hand can use one of the following abilities as an action.

Devotion's Favor(Recharge 5-6) The Hand can recover all expended spell slots

Mystic Arcanaum(Recharge 5-6) The Cult of the Dragon Hand can cast Create Undead without expending a spell slot.

Divine Command. The Hand can use its bonus action to command one of its allies within range to use its reaction to move up to half its movement speed and to make an attack against a creature within range.

Eldritch Storm(Recharge 5-6). When the Hand can use its bonus action it uses its Eldritch Blast attack.