You can use a Bonus Action to curse a creature you can see within 90 feet. Until the spell ends, your attacks deal extra necrotic damage against it and you gain benefits when it dies.

When you are hit by an attack, you can use your Reaction to gain Resistance to one damage type of your choice until the start of your next turn. You can use this once per Short or Long Rest.

You hurl a beam of crackling force at a creature within 120 feet. On a hit, it takes 1d10 force damage, plus 6 damage from Agonizing Blast, and can be pushed 10 feet away by Repelling Blast.

You unleash hellish power in a line of fire, damaging creatures in the area and igniting flammable objects.

You create a wall of flames that damages creatures crossing it and can block passage.

You teleport up to 60 feet to an unoccupied space you can see and can bring a willing creature with you.

You gain invisibility for yourself or a creature you touch until the spell ends or the target attacks or casts a spell.

You transform yourself or a creature into a new form, subject to the spell's limitations.

You call forth a powerful fiend that obeys your commands and fights for you.

You gain two cantrips from the Warlock spell list and can prepare two level 1 or higher Warlock spells. You have four Pact Magic spell slots, all of which are level 5, and regain them after a Short or Long Rest.

You gain Eldritch Invocations. Selected invocations: Agonizing Blast, Armor of Shadows, Devil's Sight, Eldritch Mind, Lessons of the First Ones, Pact of the Tome, Repelling Blast, Sculptor of Flesh, Visions of Distant Realms, and Witch Sight.

Once per Long Rest, you can perform a 1-minute ritual to regain expended Pact Magic spell slots equal to half your maximum, rounded up.

You choose a Warlock subclass. Riola's subclass is the Fiend.

You gain an additional cantrip and can prepare up to five Warlock spells. You also gain an Ability Score Improvement or another eligible feat.

You gain one additional Eldritch Invocation and your Pact Magic slots increase to level 3 slots.

When you reduce a hostile creature to 0 Hit Points, you gain temporary Hit Points equal to your Charisma modifier plus your Warlock level. You can use this once per turn.

You gain an additional Eldritch Invocation and your Pact Magic slots increase to level 4 slots.

You gain an Ability Score Improvement or another eligible feat, and one additional Eldritch Invocation.

You can contact your patron through a brief mystical communication. Your patron answers through thoughts, visions, omens, or other supernatural signs, at the DM's discretion.

You gain an additional cantrip, can prepare up to ten Warlock spells, and gain the Fiend's resilience feature.

You gain Mystic Arcanum, preparing one level 6 Warlock spell that you can cast once without a spell slot per Long Rest. You also gain an additional Pact Magic slot.

You gain an Ability Score Improvement or another eligible feat, and one additional Eldritch Invocation.

You gain Mystic Arcanum, preparing one level 7 Warlock spell that you can cast once without a spell slot per Long Rest.

You gain Mystic Arcanum, preparing one level 8 Warlock spell that you can cast once without a spell slot per Long Rest. You also gain an additional Eldritch Invocation.

You gain an Ability Score Improvement or another eligible feat.

You gain Mystic Arcanum, preparing one level 9 Warlock spell that you can cast once without a spell slot per Long Rest. Your Pact Magic slots increase to four level 5 slots.

You gain an additional Eldritch Invocation.

You gain an Epic Boon feat. Riola has Boon of Fate, allowing him to add or subtract 1d10 from a creature's attack roll, ability check, or saving throw within 60 feet, three times per Long Rest.

Once per Long Rest, you can spend 1 minute entreating your patron to regain all expended Pact Magic slots.

You know two cantrips and one level 1 Wizard spell from Magic Initiate. Riola uses Charisma for these spells. He can cast the level 1 spell once without a spell slot per Long Rest.

You can cast one Warlock cantrip as part of the Attack action and add your Charisma modifier to its damage rolls. Agonizing Blast is applied to Eldritch Blast.

When Eldritch Blast hits a creature, you can push it up to 10 feet away from you.

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

You have Advantage on Constitution saving throws made to maintain Concentration on a spell.

You can cast Mage Armor on yourself without expending a spell slot.

You gain the Alert feat as an Origin feat through this invocation.

You gain Pact of the Tome, creating a Book of Shadows containing three cantrips and two level 1 ritual spells from eligible spell lists.

You can cast Polymorph on yourself without expending a spell slot once per Long Rest.

You can cast Arcane Eye without expending a spell slot.

You gain Truesight with a range of 30 feet.

Once per turn when you hit a creature with your pact weapon, you can expend a Pact Magic spell slot to deal extra force damage and potentially knock the target prone. This invocation is not selected by Riola.

You can usually find a temple, shrine, or religious community where you can receive modest aid, such as food, shelter, or basic healing, provided you show respect and explain your need. The community is not obligated to risk its lives or resources for you.