Destruction Incarnate

You reach out your hand, pushing as much magical energy into your palm as possible, releasing it on one large burst. On a hit, the target takes 5d8 necrotic damage, and it can't regain hit points until the start of your next turn. Until then, the target is frozen in fear by the power of the gods.

If you hit an undead target, it also has disadvantage on attack rolls against you until the end of your next turn.

This spell's damage increases by 1d8 when you reach 5th level (6d8), 11th level (7d8), and 17th level (8d8).