Your brood are vigilant and you can release them to help you look around. You gain the following benefits:

• Increase your Wisdom score by 1, to a maximum of 20.
•  You can use an action to release the creatures of your brood, which crawl out of your body and look in all directions. Until you use a bonus action to return your brood to your body, you have advantage on Wisdom (Perception) checks that rely on sight. This is a swarmblood ability.