Cassandra Carver

Cassandra Carver was an elderly, blind, metahuman living at the Smallville Retirement Center.

Cassandra's Powers
Precognition: Cassandra can see into the future of others by a touch

Origins
Cassandra lost her sight when the The 1st Meteor Shower struck Smallville on 1989. A meteor hit a field near her house and the resulting flash burnt her optic nerves. Around the same time, Cassandra started seeing snapshot visions that she couldn't control.

Season 1
When Cassandra met Clark Kent, she gave him two visions of his own future; one featuring Clark standing in the middle of a graveyard surrounded by the graves of his family and friends, and one of multiple people in trouble. She knew something of his future since she had seen him in the futures of so many of the people she had touched, and told him that he took away their pain and fear. When she and Clark last met, before he joined Chloe and Pete in searching Harry Bolston/Volk's room, she assured him with a smile that his secret was safe with her.

Lex Luthor visited Cassandra and asked her to see his future. Although he wasn't aware of it, she saw a vision of him in the White House, then surrounded by flowers, which turned to corpses while he was bathed in a rain of blood. The shock of the vision killed her.