1 hour/catalyst

As an action, you can create this bomb. As an action, a creature can throw this bomb at a point within 5 meters, where it explodes on impact. Darkness spreads to fill a sphere twice as big as normal for the duration. The darkness spreads around corners. Non-magical light, as well as light created by concoctions or spells using equal or less catalysts or mana, can’t illuminate the area.