School of Thaumaturgy

While most wizards are incapable of performing healing spells due to the innately spiritual component of the required magic some wizards called thaumaturgists are capable of using healing magic either through advanced abjuration spell work or mimicking the magical properties of a cleric's spellcasting. 

Restoration Neophyte

At 2nd level, the following spells are added to your wizard spell list:

• Cure Wounds
• Healing Word
• Aid
• Beacon of Hope
• Mass Healing Word
• Revivify
• Mass Cure Wounds
• Raise Dead
• Greater Restoration
• Lesser Restoration
• Resurrection
• Regenerate
• Mass Heal
• True Resurrection

Arcane Healer

At 6th level, whenever you use a spell of 1st level or higher to restore hit points to a creature, the creature regains additional hit points equal to your Intelligence modifier.

Lifebringer

Starting at 10th level, when you cast a spell on a fiend or undead you can cause it to deal an amount of radiant damage equivalent to the amount of hit points it would heal if the target was a humanoid. At 14th level, you may use this feature on creatures that are not a fiend or undead.

Convalescence

Starting at 14th level, after rolling for initiative you and up to 5 creatures of your choice gain an amount of temporary hit points equivalent to your wizard level + your Intelligence modifier.