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From Pathfinder Lost Omens Gods & Magic, which isn't enabled.

Irori - Moderate Curse

BOON

Irori challenges you to adapt to adversity in order to perfect yourself. You become weighed down as if under heavy weights, becoming Clumsy 2 and Encumbered until you accomplish a challenging task of Irori's choosing.

Pathfinder Lost Omens Gods & MagicOGL