Summer Rage

The barbarian channels the heat of late summer, making the air around them hot and oppressive. A creature within the barbarian's reach becomes fatigued as long as it remains within the barbarian's reach unless it succeeds at a Fortitude save (DC = 10 + half the barbarian's level + their Constitution modifier) to become immune for 24 hours. A barbarian can have only one season-themed rage power, choosing between spring, summer, autumn, or winter rage.