"Number 69: Heraldry Crest".
The "Heraldry" archetype largely serves as support for the "Heraldic Beast" archetype, and consists mostly of Spell and Trap cards. The archetype itself lacks a single form of cohesive gameplay, instead augmenting the abilities of a "Heraldic Beast" Deck. For example; "Heraldry Change", "Heraldry Reborn" and "Advanced Heraldry Art" all feature effects which Special Summon "Heraldic Beast" monsters for quicker Xyz Summons. "Heraldry Record" serves a defensive purpose in line with the archetype's anti-Xyz monster effects, negating the activation of an Xyz Monster's effect.
The archetype features only two monster cards, "Number 69: Heraldry Crest," and its "Number C" counterpart "Number C69: Heraldry Crest of Horror." The duo are respectively the second-to-the-most and most powerful Psychic-Type Xyz Monsters in the game in terms of ATK, and have devastating anti-Xyz effects. "Number 69" negates the effects of all Xyz Monsters when it come into play, and once per turn can adopt the name and effects of one Xyz Monster in play. Its upgraded counterpart, "Number C69" not only features a staggering 4000 ATK (the highest of all Psychic and Rank 5 Monster Cards), but features a passive effect that destroys all cards the opponent controls whenever they attack. In addition, if Summoned by a "Rank-Up-Magic" card using its original form, it gains the ability to absorb the ATK and effects of one Xyz Monster per turn, making its ATK soar to ever-higher levels.
With the Japanese release of Legacy of the Valiant, the archetype receives one of its most unique support cards, "Heraldry Augmentation". This Field Spell Card supports both its own archetype and the "Heraldic Beasts" by protecting Psychic Xyz Monsters from Spell and Trap effects, but can search other members of its own archetype by discarding "Heraldic Beasts" (whose effects work best while in the Graveyard).