Is Necromancy the Worst Class? My Skeleton Slays Dragons with Ease

【Infinite Flow】+【Comedy】 All I wanted was to change class into a necromancer, make skeleton soldiers work for me, and live an ordinary life. After completing the class change, I awakened an invincible survival talent and a cultivation System. But for some reason, I couldn't cultivate at all. Then, all of a sudden, my skeleton soldiers could cultivate. If anyone says they want to check whether my skeletons have osteoporosis, I'll have them cut down the enemy one by one.