Shield of Cthulhu

The Shield of Cthulhu is an Expert Mode accessory from the Treasure Bag dropped by the Eye of Cthulhu. Equipping it allows the player to perform a dash attack by double-tapping either the or  key. Dashing into an enemy deals 30 damage, and grants momentary invincibility.

Tips

 * You can use the Shield's dash to boost yourself to the maximum sprint speed provided by your sprinting accessories. This also works with the Unicorn Mount, if the mount is summoned immediately following the dash.
 * Getting this shield early and using the dash defensively will greatly increase your survivability during boss battles. It remains a very valuable defensive tool until replaced with the Tabi.

Trivia

 * If the Shield is equipped in a hidden accessory slot, it will still be visible while dashing.
 * If the player is currently moving in one direction, and double taps the opposite direction key while still holding the previous direction key, they will dash in the same direction that they are moving in.
 * When the Shield appears after dashing while the Shield is in a hidden accessory slot, it will not take any dyes into account.
 * When dashing below a 1-block-wide hole and using the up key (or otherwise, a hole below and pressing the down key), the Shield of Cthulhu allows the player to move through 1-block-wide holes. This seems similar to a hoik effect and can be useful when there are a lot of these gaps in ones generated world dungeon.

History
Bouclier de Cthulhu