Revengeful Eye of Cthulhu

The Cataract Eye of Cthulhu is a hardmode, Post Moon Lord event boss that is spawned after 125 enemies of the Watching Storm event are killed by the player. It looks like the Eye of Cthulhu, but without it's pupil, instead being purely white, like a Demon Eye's Cataract variants. When it spawns, the message "''You feel a familiar presence watching you....." '' will be sent. After 10 seconds to prepare, the message "