Golden Mask

The Golden Mask is used to grant access to Marco Barbarigo's exclusive party during Carnevale. It is a storyline item that must be acquired in order to progress to the target assassination.

How to Obtain
Once Ezio completes the four Carnivale challenges in one of which he defeats the Templar Soldiers and Dante Moro in a rigged fight, he was supposed to receive the Golden Mask as the reward, but Silvio Barbarigo bribed the Carnivale announcer to give the mask to Dante instead.

Ezio, Antonio and Sister Teodora plan on how to take the mask back. Ezio suggests killing Dante, but Antonio says to steal the mask from him using Sister Teodora's girls to distract him as killing Dante will surely cancel the party altogether. Sister Teodora also warns that before he even thinks of forging a replica, each mask is numbered to prevent unauthorized access with copies.

Once you steal the mask, it goes into effect once you enter Marco Barbarigo's party, he must become hidden from the Templar guards under Dante while they look for Ezio and the mask.Then you kill him with the gun recieved from Leonardo

Trivia

 * The Golden Mask is only used during this mission.
 * Several Pedestrians around the Dorsoduro district of Venice can be seen wearing the Golden Mask, but they will not drop it if killed or pickpocketed.
 * The Golden Mask is the second and last mask Ezio wears in Assassin's Creed II, the first one being a plain silver one given to him by Leonardo to help disguise him during the Venice Carnevale.
 * The mask is also known as a Bauta because it is a full mask that hides the whole face.