Brass Dragon Lineage

(Dragon Magic, page 16, DnD 3.5)

[Draconic]

You have unlocked the power of your brass dragon ancestry and can put foes to sleep with ease.

Prerequisite

Draconic Heritage (brass), sorcerer level 3rd

Benefit

As a lull-round action, you can spend an arcane spell slot to cause a living creature within 30 feet to fall asleep for 1 round. A successful Will save (DC 10 + the spell slot's level + your Cha modifier) negates the effect. If the creature's Hit Dice equals or exceeds three times the spell slot's level, the effect automatically fails.