Abyssal Shell

The Abyssal Shell is a Hardmode accessory. It provides the ability to enter a shell by pressing the key, making you invulnerable to most forms of damage. However, while affected, your movement speed and life regeneration are drastically reduced, you are unable to use items and all damage output is mostly nullified. Pressing the key again will exit the shell and inflict the Abyssal Weight debuff, briefly reducing your speed, damage and damage reduction.

This item is obtained from the Treasure Bag of Abyssion, The Forgotten One in Expert Mode only.

Tips

 * As the player in the shell does not receive any damage, a viable strategy in multiplayer is to have the player in the Abyssal Shell distract the boss while the others kill it.