Erika was previously thought to be the rarest card in the set
Now with the advent of Commander, the power of this one has only gone up, and can be built into an absolute house in the right hands
[Note 1] [Note 2] The player's Deck Master typically starts the Duel visible (with the exception of Leichter's "Jinzo", whose identity was disguised, and Noah's "Shinato's Ark", which only manifested when Noah revealed its first Deck Master ability), but they have no practical function for a Duel while in this state, other than their Deck Master ability
Filtering basics out of the deck improves your draws, and throwing them into the graveyard can set up some big plays
Dark Armed, the Dragon of Annihilation X DARK Rank 7 [ Dragon / XyzEffect ] ATK 2800 DEF 1000 2+ Level 7 monsters Once per turn, if you have exactly 5 DARK monsters in your GY, you can also Xyz Summon "Dark Armed, the Dragon of Annihilation" by using 1 Level 5 or higher DARK Dragon monster you control as material