For 10 points, name this item, one of which featuring the head of Medusa is Athena's Aegis.
An archaic Greek poem in which Iolaus and his uncle battle Cycnus is named for one of these. Eleven copies were made of one of these items belonging to Mars called the Ancile. One of these items called Svalinn sits in front of the sun. Joseph of Arimathea's blood is on one belonging to Galahad, and Lancelot's can grant him limitless energy. One belonging to Aeneas prophetically depicts the victory at Actium. Achilles' one is the subject of an ekphrasis in the Iliad. A huge lion-skin one is used by Ajax the Greater to protect Teucer, and Perseus uses a mirror-like one to slay Medusa. For 10 points, name this item, one of which featuring the head of Medusa is Athena's Aegis.
An archaic Greek poem in which Iolaus and his uncle battle Cycnus is named for one of these.
shields [or specific types such as bucklers]