The Ectopus will float around, firing blue blobs at the player. Like most projectiles, these can be destroyed with one hit. They may inflict the Cursed or Silenced debuffs as well. If the player attempts to escape, however, it will shoot out a blue tendril that reels them in helplessly, similarly to the Tongue debuff. The tendril has no health and cannot be deflected; it has 70 power. During the fight, the Ectopus will occasionally spawn Dungeon Spirits.
Credit for this sprite, name and original idea goes to Sir Cutswood.
His sprite thread can be reached here: http://www.terrariaonline.com/threads/sir-cutswoods-sprites.141229/