Pridwen

The Claymore, Artemis, Pridwen, Gungnir, and The Caduceus.  These legendary weapons are summoned from Julian’s Talisman, Pandora’s Die of Hope. They can be summoned for Julian’s use one at a time by making his die land on the corresponding number. He is able to switch back and forth between them quite easily by rolling the die between his hands. It is not known how he controls the number, but since he and Rome were forced into The Great Synergy, he has materialized each time correctly.

Pridwen: Summoned when Julian rolls a three on his die. Imbued by the Good King Arthur, his magically enhanced shield is impervious to all elemental attacks.