Sightburst 2014

A wave of echoing sound emanates from you. Until the start of your next turn, you have blindsight out to a range of 100 feet, and you know the location of any natural hazards within that area. You have advantage on saving throws made against hazards detected with this spell.

When you cast this spell using a spell slot of 3rd level or higher, the duration is concentration, up to 1 minute. When you use a spell slot of 5th level or higher, the duration is concentration, up to 10 minutes. When you use a spell slot of 7th level or higher, the duration is concentration, up to 1 hour.