Blind Earthbender

Creature is permanently Blinded (unless transformed/polymorphed).
Attack rolls by unseen enemies against the creature have advantage, and the creature’s Attack rolls on unseen enemies have disadvantage.

Creature has 5 ft. of Blindsight. The creature can perceive its surroundings without relying on sight.
Every ranged attack on the creature from outside the creature's sight has advantage.
At level 10 this is increased to 10 ft.

Creature has 30 ft. of Tremorsense.
At level 5 this is increased to 40 ft.
At level 10 this is increased to 50 ft.
At level 15 this is increased to 60 ft.
Creature cannot sense enemies who are flying, on trees or roofs, etc.
Enemies that cannot be sensed, cannot be targeted.

If the creature attempts to Dash with no sight of at least 10 ft. he must succeed an Acrobatics check of DC8+(ft. dashed/10), meaning a 30 feet dash is DC11. On fail the creature falls Prone where the dash initiated.

Requires a strong bond with the Earth element (being able to cast at least one spell related to the earth), and being blind for at least 10 years.

Sense increases at higher levels need to be set manually.
If the creature possessed Darkvision it is now lost.
Condition "Blinded" needs to be set manually.