The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Fiend Spells table, you thereafter always have the listed spells prepared.
Fiend Spells
| Warlock Level | Spells |
|---|---|
| 3 | Burning Hands, Command, Scorching Ray, Suggestion |
| 5 | Fireball, Stinking Cloud |
| 7 | Fire Shield, Wall of Fire |
| 9 | Geas, Insect Plague |