[quote=@XxFellsingxX]
<Snipped quote by Guardian Angel Haruki>

Got a [url=https://www.roleplayerguild.com/rolls/25578]10[/url].
[/quote]

Ok! You just made the DC!

After the Sleep spell is cast and settled, Jub sees a bunch of large bubbles reach the surface and burst. Just from seeing that, Jub can be certain that somebody stopped holding their breath underwater.