This card follows the same theme as "Blue-Eyes Shining Dragon", as it is an advanced, metallic, wvyern-like version of its base card, has the same original ATK and DEF as its base version, is 2 levels higher than its base version, and gains 300 ATK for each Dragon-Type monster in the controller's Graveyard. The main difference is that while this card only requires its base version as a Tribute and has no further effects, "Blue-Eyes Shining Dragon" requires the triple fused form of "Blue-Eyes White Dragon", "Blue-Eyes Ultimate Dragon", as a Tribute and has the rather unique effect of allowing the controller to choose which effects can target it.
In Episode 159, it is revealed that Fujiwara gave Atticus Nightshroud's mask, no longer needing it. However, Atticus did not use it until he entered another dimension as part of a test from Professor Banner. Although this card is first explicitly seen in Episode 30, the first time Atticus actually used it was in a Duel against Gravekeeper's Chief, as it was the only way Nightshroud could use him as a host.
Atticus became more and more resistant to Nightshroud's influence as he used this card during his on-screen duels. While he was possessed in Episode 30, he managed to stave off Nightshroud until Zane used "Power Wall" in Episode 89. And despite Nightshroud's struggles, he did not manage to possess Atticus during the Duel in Episode 159.