Eater of Worlds

The Eater of Worlds is a Boss monster summoned by using Worm Food in The Corruption (manually planted corruption only counts if there are at least 300 ebonstone) as well as being summoned each time you break 3 Shadow Orbs. Only one can be summoned at any one time. Trying to summon another will result in instant death.

Segments

 * 1-3 Shadow Scales: 100% (1:1 chance)
 * 2-5 Demonite Ores: 50% (1:2 chance)

Final Kill

 * 30-59 Demonite Ores: 100% (1:1 chance)
 * 5-15 Lesser Healing Potions: 100% (1:1 chance)
 * 1 Piece of Shadow Armor: 100% (1:1 chance)
 * Shadow Helmet: 33.33% (1:3 chance)
 * Shadow Scalemail: 33.33% (1:3 chance)
 * Shadow Greaves: 33.33% (1:3 chance)

Boss Description
Like all Worms, the Eater of Worlds is not a single target; Each body section is an individual entity. Unlike other worms, however, the Eater of Worlds will split into multiple smaller worms when a body segment is defeated. To defeat the Eater of Worlds, you must completely destroy each and every section of the Worm, until there is nothing left.

Each individual worm is composed of at least 2 entities: a Head, a Tail, or more Body sections. Splitting the Eater of Worlds into parts of less than 2 sections will instantly destroy the stray parts.

Each section of the Eater of Worlds is not equivalent: The Head of the Worm will deal significantly more damage than the Body and Tail. Direct contact with Heads should be avoided at all cost (Even if you can't fully avoid a Worm, a Body contact is better than a Head contact). The Head of the Eater of Worlds has significantly less Health than the body; This can be exploited when trying to hunt down the last small Worm.

Trivia

 * In update 1.0.4 the Eater of Worlds was updated to have slightly more HP and Defense and deal more damage.