You have incredible breath control, which grants you advantages when air is hazardous or sparse, you gain the following benefits:

• You can hold your breath for a number of minutes equal to your Constitution score before suffocating,
• When you run out of breath or you choke, you can survive for a number of rounds equal to twice your Constitution modifier (minimum of 2 round),
• You have advantage on saving throws made against inhaled threats, such as inhaled poisons.