The School of Thanomancy teaches necromancy generally, but leans hard towards controlling undead minions.
Choose two Wizard spells from the Necromancy school, each of which must be no higher than level 2, and add them to your spellbook for free.
In addition, whenever you gain access to a new level of spell slots in this class, you can add one Wizard spell from the Necromancy school to your spellbook for free. The chosen spell must be of a level for which you have spell slots.
You know the Chill Touch cantrip, it does not count against your number of cantrips known, and you can cast it without spell components. When you cast it, you can choose to lose any Temporary Hit Points you may already have and gain Temporary Hit Points equal to the Necrotic damage taken by the target.
While you have any of these Temporary Hit Points you are Immune to Necrotic damage and your Hit Point maximum cannot be reduced.
You gain your choice of one of the following options.
*Raiser of the Dead. You always have the Animate Dead spell prepared, and it does not count against your prepared spells limit. Additionally, you can cast Animate Dead as a Magic action but if you do so, after 10 minutes each creature that remains animated returns to its previous state as a pile of bones or a corpse.
*Summoner of the Dead. You always have the Summon Undead spell prepared, it does not count against your limit, and you can cast it without Material components. Additionally, when you cast Summon Undead you can modify it so that it does not require Concentration. If you do, the spell's duration becomes 1 minute for that casting, and when summoned the Undead Spirit has a number of Temporary Hit Points equal to your Wizard level plus your Intelligence modifier.
The feature option you previously chose for Adept of Death improves.
*Raiser of the Dead. You always have the Raise Dead and Create Undead spells prepared. Raise Dead is a Wizard spell for you, and neither spell counts against your prepared spells limit. You can cast one but not both spells without a spell slot and without Material components once per Long Rest.
*Summoner of the Dead. When you cast Summon Undead, it is resolved as if it is being cast using a spell slot one level higher than it actually is. Also, you can cast Summon Undead without a spell slot once per Short Rest.
You always have the Finger of Death spell prepared and it does not count against your limit. You can cast Finger of Death without Verbal components, with a range of 300 feet, and it always deals maximum damage.
Additionally, you can cast Finger of Death without a spell slot once per Long Rest.