How Do Warlocks Get More Spell Slots?

As a warlock, your access to spells is largely determined by your patron, which provides you with a set of spells known as your Pact Magic. You also have a number of invocations, which allow you to use special abilities and cast spells that are not on your Pact Magic list.

In addition, you have a number of spell slots that you can use to cast spells.

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The number of spell slots you have depends on your level. You start with two spell slots at 1st level, and you gain more as you reach higher levels, as shown in the Spell Slots column of the Warlock table.

When you reach 4th level, and again at 8th, 12th, 16th, and 20th level, you can choose to increase one of your ability scores by 2, or you can choose to gain an additional spell slot.

In order to use a spell slot, you must have a spell of the corresponding level or higher on your Pact Magic list. For example, if you want to use your 1st-level spell slot to cast the 3rd-level spell Hex, you can do so because Hex is a 3rd-level spell on your Pact Magic list.

You can also use your spell slots to cast spells that you know or have prepared from other classes’ spell lists. For example, if you are a 5th-level warlock/1st-level wizard, you could use your 3rd-level warlock spell slot to cast the 1st-level wizard spell Mage Armor.

You prepare these spells just like your warlock spells, but they consume Spell Slots when cast instead of Pact Magic.

At higher levels, warlocks gain access to more powerful spells and abilities. These are called Eldritch Invocations, and they allow warlocks to customize their powers to better suit their needs.

Some Eldritch Invocations allow warlocks to cast additional spells or grant them new abilities. Others allow warlocks to augment their existing spells in new and powerful ways.

Eldritch Invocations are divided into three categories: Least Invocations, Lesser Invocations, and Greater Invocations. As a warlock gains levels, they gain access to more powerful invocations; at 6th level, a warlock gains access to Least Invocations; at 10th level, they gain access to Lesser Invocations; and at 14th level, they gain access to Greater Invocations.

Invocations come in two types: those that require an action to activate (called active invocations), and those that do not (called passive invocations). Active invocations usually take the form of Spells or Spell-Like Abilities; passive invocations usually take the form of bonuses or resistances.

Some Eldritch Invocations have prerequisites that must be met before they can be taken; these are listed in parentheses after the invocation’s name. A character must meet all prerequisites for an invocation before taking it.

In order to get more spell slots as a warlock, you must either increase one of your ability scores by 2 (at 4th level) or 8 (at 20th level), or choose to gain an additional spell slot (at 8th level). Additionally, some Eldritch Invocations allow warlocks to cast additional spells or grant them new abilities that consume Spell Slots when used.