Shadow Adept

You've willingly exposed yourself to more of the Shadowfell's energy, establishing a connection so you can channel all of it for your black magic.

Ability Score Increase. Increase the spellcasting ability score used by your Shadow Touched feat by 1, to a maximum of 20.

Shadowfell Mastery. Spells you cast ignore resistance to necrotic damage.

Shadow Necromancy. You no longer need to use a bonus action or an action to issue any mental commands to any undead creatures that are under your control or influence, if you don't already do so as a no action. In addition undead you create or summon gain a bonus to their attack and damage rolls equal to half of your proficiency bonus.