Squire's Shield

The Squire's Shield is a Hardmode shield accessory that increases the player's maximum number of sentries by one and increases summon damage by 10%. It is dropped by the Ogre or by the Dark mage

during the Old One's Army event with an 8.33% /  or 4.17%  chance.

Trivia

 * The Squire's Shield and the Huntress's Buckler are the only shield accessories that do not grant defense.