Dissonance Seer

The Dissonance Seer is a Hardmode enemy that can be found in the Underground Hallow biome. They attack by releasing a volley of 6 Dissonance Bolts that home in on the player. After attacking about 4 times, Dissonance Seers will teleport to random location near the player as long as it is within the Hallow biome, otherwise they will stop teleporting.