A staple of fantasy literature and fairy tales, the witch dabbles in many kinds of magic --— minor illusions, spells dealing with health or life, nature-based magic, simple divinations, and spells that alter the shape and appearance of things --— but excels at just a few. Hence, her list is somewhat limited, but it contains wizard, cleric and druid spells. She casts spells as a sorcerer, using the sorcerer’s Spells per Day table, and her spells are based on Charisma. The witch’s spell list is designed with the following considerations in mind.
Cure Spells: Only the weakest of these, and the witch doesn’t have the cleric’s ability to cast cure spells spontaneously. The witch isn’t blessed with a cleric’s (or druid’s) plethora of healing spells, but she can offer a little aid to those she favours.
Illusions: Only through the middle levels. A witch can trick her foes, but not to the extent that a wizard can.
Divinations: Only the straightforward divinations, such as clairvoyance/clairaudience and scrying, and not even all of them.
Charms: Many. A major feature of this class.
Form-Changing: Another strong point for the witch. From alter self to shapechange, the witch has most of the spells relating to changing her (or someone else’s) form.
Nature: From speaking to animals to controlling the weather, the witch dabbles in this type of magic, if for no other reason than she usually lives a secluded life in the wilderness.
No Flashy Spells: Anything from a lightning bolt to a wall of fire to a Bigby’s hand spell is right out. The witch’s archetype doesn’t suggest overt attack spells or spells that create massive magic constructs. She doesn’t summon monsters, place wards or teleport from place to place. Her magic is subtle.
Miscellaneous: Spells such as whispering wind, Leomund’s tiny hut, bestow curse (and a few other curse-like spells), and a few communication spells round out the list.
* When she becomes able to cast 3rd-level spells, the witch chooses to have one of the four magic circle spells on her spell list. Whichever spell she chooses, she cannot cast it as a spell of an alignment opposed to her own.
Source: Dungeon Master’s Guide (Page 175)