Keeper's Echo

Your mortal sight has been exchanged for a supernatural perception granted by The Keeper, allowing you to interpret the world through mystical echoes rather than vision.

• You are permanently Blinded. This blindness is magical in nature and cannot be removed by spells or effects that restore sight, unless your DM determines otherwise.
• You gain Blindsight out to a range of 30 feet.
• You automatically fail any ability check that relies solely on sight beyond the range of your blindsight. Likewise, you cannot perceive color, read writing, or discern other complex visual details unless aided by magic.
• While a creature is within the range of your blindsight, you have advantage on Wisdom (Insight) checks made against that creature. You perceive subtle changes in its breathing, heartbeat, and voice that most creatures would never notice.
• If you take thunder damage, or are subjected to an exceptionally loud sound (such as the Thunderwave spell, a ringing church bell, or another effect at the DM's discretion), your supernatural senses are overwhelmed. Until the end of your next turn, your blindsight is reduced to 10 feet.