* The geometric figure inside the Seal This is called a [[wikipediacover card]] of ''[[Extra Pack 2012]]'', as well as ''[[Legendary Collection 3:unicursal hexagram|unicursal hexagramYugi's World]]. Konami calls it a "double-'' and its [[wikipediaLegendary Collection 3:chevron (insignia)Yugi's World Mega Pack|chevronMega Pack]] pattern".<ref name=firstline>[https://yugiohblog.konami.com/articles/?p=4217 Yu-Gi-Oh! TRADING CARD GAME » The Seal of Orichalcos: The First Line]</ref>

* The runes around This seal appears in the rim artworks of the Seal are "[[wikipedia:Enochian|EnochianOrichalcos Deuteros]] and spell out "Oreichalcos" twice.** In the Japanese anime, the text on all "[[OrichalcosShunoros]]" cards are also written entirely in Enochian runes, except for "[[Orichalcos Sword of Sealing]]" (incidentally, the only and "Orichalcos" card that [[DartzOrichalcos Tritos]] did not use)".

* This card previously existed as an The runes around the outer rim of the seal are the characters written in the [[Upper Deck Entertainment promotional cardwikipedia:Enochian|Enochian]]language, spelling out "OREICHALCOS" ("Oreichalcos") twice. There are only 15 copies of ** The geometric figure inside the seal is a [[Upper Deck Entertainmentwikipedia:unicursal hexagram|unicursal hexagram]] version in existence. In a ''Yu-Gi-Oh! Trading Card Game'' blog post on Konami's website, all in it is called a "double-[[wikipedia:chevron (insignia)|chevron]] pattern".<ref name=firstline>[https://yugiohblog.konami.com/articles/?p=4217 Yu-Gi-Oh! TRADING CARD GAME » The Seal of Orichalcos: The First Line]</ref> ** In the possession original Japanese version of members of Upper Deck Entertainmentthe [[Yu-Gi-Oh! (anime)|''Yu-Gi-Oh!''s R&D division]] anime, one of which was used in the Decks they played in the Orichalcos text on all "[[Duel the MasterOrichalcos]]" side event at previous cards are also written entirely in Enochian runes, except for "[[National TournamentOrichalcos Sword of Sealing]]s".{{fact}} The current status Coincidentally, "Orichalos Sword of these cards Sealing" is unknownthe only "Orichalcos" card to not be used by [[Dartz]], as they haven't been instead used since by [[KonamiRafael]] reclaimed distribution and organization rights.

* This is the only [[Field Spell Card]] that can only be activated once per [[Duel]].

* This was is as the first card to prevent the user from [[Special Summoning Summon]]ing from their [[Extra Deck as a means of balancing its power. Later cards have since picked up on this, such as "[[March of the Monarchs]]".

* The third effect of this This is the only card is identical known to that of "have received a printed [[Pixie Ring]]". Konami themselves have pointed out this fact.<ref name=blanks>[https://yugiohblog.konami.com/articles/?p=4270 Yu-Gi-Oh! TRADING CARD GAME » The Seal of Orichalcos: Filling in the Blanks(mock-up)|mock-up]]</ref>.

* This is the first [[anime-only|anime-original exclusive]] card to have been be released a [[TCG exclusive|''TCG''-exclusive]] card.

* Konami has pointed out that the number of sentences of text on the ''This card previously existed as an [[TCGUpper Deck Entertainment promotional card]]'' print . There are only 15 copies of this card matches the number of lines and points in this card's symbol.<ref name=firstline/> * This card's first effect, the 500 [[ATKUpper Deck Entertainment]] boostversion in existence, is the only one identical to its anime counterpart. Its second effect, not being destroyed once per turn, was displayed all in the anime when [[Yami Yugi|Yugi]] tried to destroy [[Gurimo]]possession of members of Upper Deck Entertainment's copy with "[[Dust Tornado]]"; while Gurimo claimed the card could not be destroyed at allR&D division, since it one of which was never attempted to be destroyed again, Konami asserts that Gurimo was intentionally deceiving Yugi.<ref name=blanks/> Its third effect, limiting your opponent's choices for attacking your monsters, is a twist on its anime counterpart's effect to prevent used in the opponent from attacking monsters placed Decks they played in the [[Spell & Trap Card Zone]] by its other effect. Its fourth and fifth effects, preventing the user from Summoning monsters from the [[Extra Deck]] and destroying Special Summoned monsters, is based on what happened when this card was played by Yami Yugi, destroying Orichalcos "[[Dark Magician Girl Duel the Dragon KnightMaster]]" and reverting it to its unfused state, and the fact that Yugi, side event at previous [[DartzNational Tournament]], [[Rafael]], [[Valon]], and [[Alister]] did not Fusion Summon after it was activated<ref>[https://yugiohblogs.konami.com/articles/?p=4229 Yu-Gi-Oh! TRADING CARD GAME » {{fact}} The Seal current status of Orichalcos: The Fourth & Fifth Lines]</ref> (notably, [[Rex Raptor]] did [[Fusion Summon]] "[[Horned Saurus]]" while controlling "The Seal" in [[Yu-Gi-Oh! - Episode 161|episode 161]]). Its sixth line of text, a [[condition]], these cards is based on the fact that a Duelist in the anime who uses this card once in a Duel will not be able to use it againunknown, as either they will win the Duel and trap their opponenthaven's soul in the card, or they will lose the Duel and their soul along with it (barring t been used since [[DRAW]]s).<ref name=blanks/> * This is the only card to have received a printed [[The Seal of Orichalcos (mock-up)|mock-upKonami]]reclaimed distribution and organization rights.

* This card appears 's ''[[OCG]]''/''[[TCG]]'' effects are based on its effects in the ''Yu-Gi-Oh!'' anime. In the above-mentioned blog post on Konami's website, the number of sentences of the text in this card's ''TCG'' print of this card matches the number of lines and points in this seal's symbol.<ref name=firstline/>** This card's first effect to increase the user's monster's [[ATK]] by 500 is the artwork only effect identical to its anime counterpart.** This card's second effect, preventing it from being destroyed [[once per turn]], is based on how [[Yami Yugi]] attempted to destroy [[Gurimo]]'s copy of this card with "[[Orichalcos DeuterosDust Tornado (anime)|Dust Tornado]]"; while Gurimo claimed the card could not be destroyed at all, since it was never attempted to be destroyed again, Konami asserts that Gurimo was intentionally deceiving Yugi.<ref name="blanks" />** This card's third effect, preventing the opponent's monster from targeting the player's monster with the lowest ATK for attacks, is based on its anime counterpart's effect to prevent the opponent from attacking monsters placed in the [[Spell & Trap Zone]] by its other effect. This effect is identical to that of "[[Pixie Ring]]", which Konami pointed out when announcing it.<ref name=blanks>[https://yugiohblog.konami.com/articles/?p=4270 Yu-Gi-Oh! TRADING CARD GAME » The Seal of Orichalcos Tritos: Filling in the Blanks]</ref>** This card's fourth and fifth effects, preventing the user from Summoning monsters from the Extra Deck and destroying Special Summoned monsters, is based on what happened when this card was played by Yami Yugi, destroying "[[Dark Magician Girl the Dragon Knight (anime)|Dark Magician Girl the Dragon Knight]]"and reverting it to its unfused state, and the fact that Yugi, [[Dartz]], [[Rafael]], [[Valon]], and [[Alister]] did not Fusion Summon after it was activated.<ref>[https://yugiohblog.konami.com/articles/?p=4229 Yu-Gi-Oh! TRADING CARD GAME » The Seal of Orichalcos: The Fourth & Fifth Lines]</ref>*** Notably, [[Rex Raptor]] did [[Fusion Summon]] "[[Horned Saurus (anime)|Horned Saurus]]" while controlling this card in {{episode|Yu-Gi-Oh!|161|ref}}. When "[[Horned Saurus]]" was later released in the ''OCG''/''TCG'', it was given an effect to place a [[Field Spell Card]] on the field, allowing it to coexist with "The Seal of Orichalcos Sword of Sealing".** This card's sixth effect "once per Duel" [[condition]] is based on how a [[Duelist]] who uses this card once in a Duel will not be able to use it again, as either they will win the Duel and trap their opponent's soul in the card, or they will lose the Duel and their soul along with it (barring [[DRAW]]s).<ref name=".blanks" />

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