Riola can teleport himself up to 60 feet to an unoccupied space he can see, leaving behind a burst of dark flame. He can use this after reducing a hostile creature to 0 hit points or as a bonus action by expending a spell slot.

Riola fires beams of crackling force. He makes a ranged spell attack with a range of 120 feet, dealing 1d10 force damage on a hit. At level 20, he fires four beams, and each beam can add +6 damage and push the target up to 10 feet away.

Riola can transform into a tiny, harmless-looking form or a more imposing shape, using his magic to alter his appearance at will.

Riola has a supernatural patron, the archdevil Belial's discarded daughter, a capricious infernal power called Vespera of the Velvet Flame. His patron grants him occult magic in exchange for stories, secrets, and occasional acts of beautiful mischief.

Riola learns two cantrips from the warlock spell list and can cast warlock spells using Charisma. His pact magic uses spell slots that recover after a short or long rest.

When Riola reduces a hostile creature to 0 hit points, he gains 27 temporary hit points.

Riola has chosen Pact of the Chain and can cast Find Familiar as a ritual. His familiar can take the form of an imp, which can turn invisible and deliver touch spells.

Riola has learned Agonizing Blast, adding his Charisma modifier to the damage of Eldritch Blast, and Repelling Blast, allowing each beam that hits to push a creature up to 10 feet away.

Riola can cast Counterspell once without expending a spell slot, regaining the ability after a long rest.

Riola can read all writing. He has also learned Book of Ancient Secrets, allowing him to record ritual spells in a Book of Shadows and cast them as rituals.

Riola can cast Hold Monster at will without expending a spell slot or material components.

Riola can cast Mage Armor on himself at will without expending a spell slot or material components.

Riola can cast Invisibility on himself at will without expending a spell slot or material components.

Riola can see normally in darkness, both magical and nonmagical, to a distance of 120 feet.

Riola can cast Disguise Self at will without expending a spell slot or material components.

Riola gains resistance to one damage type of his choice whenever he finishes a short or long rest.

Riola learns an additional warlock cantrip.

Riola learns one 6th-level spell that can be cast once without a spell slot after a long rest.

Riola learns one 7th-level spell that can be cast once without a spell slot after a long rest.

Riola learns one 8th-level spell that can be cast once without a spell slot after a long rest.

Riola learns one 9th-level spell that can be cast once without a spell slot after a long rest.

Riola can choose one additional Eldritch Invocation.

When Riola rolls initiative and has no spell slots remaining, he regains all of his expended Pact Magic spell slots.

Riola's Charisma score increases by 2, and his Intelligence score increases by 1, as granted by his tiefling heritage.

Riola knows the secret patterns and hidden routes of cities. He can move through urban environments quickly and find food, shelter, and local information for himself and his companions.