Shield of Cthulhu

The Shield of Cthulhu is an Expert Mode accessory from Treasure Bag dropped by Eye of Cthulhu. In order to use this item, the player must double-tap either the right or left key. The character will then run super fast to the right/left (similar to the Tabi) and deal 30 damage to any enemies you come into contact with for a short time. You will also be momentarily invincible. Master Ninja Gear, Tabi and the Solar Flare Armor Set all override the Shield of Cthulhu's dash and will cause it to not work.