You have unearthed Eldritch Invocations, pieces of forbidden knowledge that imbue you with an abiding magical ability or other lessons. You gain one invocation of your choice, such as Pact of the Tome. Invocations are described in the Eldritch Invocation Options section.

Prerequisites. If an invocation has a prerequisite, you must meet it to learn that invocation. For example, if an invocation requires you to be a level 5+ Warlock, you can select the invocation once you reach Warlock level 5.

Replacing and Gaining Invocations. Whenever you gain a Warlock level, you can replace one of your invocations with another one for which you qualify. You can’t replace an invocation if it’s a prerequisite for another invocation that you have.

When you gain certain Warlock levels, you gain more invocations of your choice, as shown in the Invocations column of the Warlock Features table.

Current Max Eldritch Invocations: 3

You can’t pick the same invocation more than once unless its description says otherwise.

Through occult ceremony, you have formed a pact with a mysterious entity to gain magical powers. The entity is a voice in the shadows—its identity unclear—but its boon to you is concrete: the ability to cast spells. See the rules on spellcasting. The information below details how you use those rules with Warlock spells, which appear in the Warlock spell list.

Cantrips. You know two Warlock cantrips of your choice. Eldritch Blast and Prestidigitation are recommended. Whenever you gain a Warlock level, you can replace one of your cantrips from this feature with another Warlock cantrip of your choice.

When you reach Warlock levels 4 and 10, you learn another Warlock cantrip of your choice, as shown in the Cantrips column of the Warlock Features table.

Current Max Cantrips Known: 2

Spell Slots. The Warlock Features table shows how many spell slots you have to cast your Warlock spells of levels 1–5. The table also shows the level of those slots, all of which are the same level. You regain all expended Pact Magic spell slots when you finish a Short or Long Rest.

For example, when you’re a level 5 Warlock, you have two level 3 spell slots. To cast the level 1 spell Witch Bolt, you must spend one of those slots, and you cast it as a level 3 spell.

Prepared Spells of Level 1+. You prepare the list of level 1+ spells that are available for you to cast with this feature. To start, choose two level 1 Warlock spells. Charm Person and Hex are recommended.

Current Max Prepared Spells: 4

The number of spells on your list increases as you gain Warlock levels, as shown in the Prepared Spells column of the Warlock Features table. Whenever that number increases, choose additional Warlock spells until the number of spells on your list matches the number in the table. The chosen spells must be of a level no higher than what’s shown in the table’s Slot Level column for your level. When you reach level 6, for example, you learn a new Warlock spell, which can be of levels 1–3.

If another Warlock feature gives you spells that you always have prepared, those spells don’t count against the number of spells you can prepare with this feature, but those spells otherwise count as Warlock spells for you.

Changing Your Prepared Spells. Whenever you gain a Warlock level, you can replace one spell on your list with another Warlock spell of an eligible level.

Spellcasting Ability. Charisma is the spellcasting ability for your Warlock spells.

Spellcasting Focus. You can use an Arcane Focus as a Spellcasting Focus for your Warlock spells.

You are descended from Giants. Choose one of the following benefits—a supernatural boon from your ancestry; you can use the chosen benefit a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Long Rest:

Cloud’s Jaunt (Cloud Giant). As a Bonus Action, you magically teleport up to 30 feet to an unoccupied space you can see.

Fire’s Burn (Fire Giant). When you hit a target with an attack roll and deal damage to it, you can also deal 1d10 Fire damage to that target.

Frost’s Chill (Frost Giant). When you hit a target with an attack roll and deal damage to it, you can also deal 1d6 Cold damage to that target and reduce its Speed by 10 feet until the start of your next turn.

Hill’s Tumble (Hill Giant). When you hit a Large or smaller creature with an attack roll and deal damage to it, you can give that target the Prone condition.

Stone’s Endurance (Stone Giant). When you take damage, you can take a Reaction to roll 1d12. Add your Constitution modifier to the number rolled and reduce the damage by that total.

Storm’s Thunder (Storm Giant). When you take damage from a creature within 60 feet of you, you can take a Reaction to deal 1d8 Thunder damage to that creature.

You have Advantage on any ability check you make to end the &Reference[Grappled] condition. You also count as one size larger when determining your carrying capacity.

As a Bonus Action, you magically teleport up to 30 feet to an unoccupied space you can see.

Your mind ravenously gathers details and desperately clings to its memories and faculties, granting you the following benefits.

Desperate Detail. You have Advantage on Intelligence (Investigation) checks.

Iron Mind. You have Advantage on saving throws made to avoid or end the Charmed condition and to avoid having your memories read or altered.

You don’t choose skill proficiencies or a tool proficiency when you select this background, and you don't determine the two languages that are part of your origin—these are parts of your past that you are missing. Instead, you can pick one of those proficiencies or the languages during play at any time. The knowledge might return in a spontaneous flash, even as you make a roll that relies on the proficiency, or slowly emerge as you struggle to solve a problem. Once you choose one of these features, you can’t choose another one until you gain a level.

The GM might rule that you can choose a new recalled feature early if something reminds you of your past, such as finding a piece of evidence from your missing memories or experiencing an event similar to one you have forgotten. Of particular value is an event relating to one of the story threads or trinkets presented below.

You can perform an esoteric rite for 1 minute. At the end of it, you regain expended Pact Magic spell slots but no more than a number equal to half your maximum (round up). Once you use this feature, you can’t do so again until you finish a Long Rest.

Prerequisite: Level 2+ Warlock, a Warlock Cantrip That Deals Damage

Choose one of your known Warlock cantrips that deals damage. You can add your Charisma modifier to that spell’s damage rolls.

Repeatable. You can gain this invocation more than once. Each time you do so, choose a different eligible cantrip.

You have Advantage on Constitution saving throws that you make to maintain Concentration.

Stitching together strands of shadow, you conjure forth a book in your hand at the end of a Short or Long Rest. This Book of Shadows (you determine its appearance) contains eldritch magic that only you can access, granting you the benefits below. The book disappears if you conjure another book with this feature or if you die.

Cantrips and Rituals. When the book appears, choose three cantrips, and choose two level 1 spells that have the Ritual tag. The spells can be from any class’s spell list, and they must be spells you don’t already have prepared. While the book is on your person, you have the chosen spells prepared, and they function as Warlock spells for you.

Spellcasting Focus. You can use the book as a Spellcasting Focus.