Sight Without Seeing

Special: to gain this feat, you take a penalty: you become blind.

• You gain Tremorsense 80 feet.

• You gain Blindsight 30 feet.
• You gain a +3 to initiative. 

• You have advantage on Wisdom (Perception) checks that rely on sound.

• You have advantage on Wisdom (Insight) checks to tell if a person is lying, so long as that person has a discernible heartbeat.

• When bombarded by sudden, cacophonous sources of sound, such as from Thunderwave, you become blinded. This blindness lasts until the end of your next turn from when the sound has subsided to manageable levels.

• When in complete silence, such as under the conditions of the silence spell, you lose your blindsense until the silence ends.