Tri-Brigade Oath

The Tri-Brigade Oath first appeared as part of the 2021 Tin of Ancient Battles, a compilation set designed to reprint high-demand cards from the preceding core booster expansions, specifically those released during the 2020-2021 period of the Yu-Gi-Oh! Trading Card Game. As a trap card, it was created to support the Tri-Brigade archetype, a group of Beast, Beast-Warrior, and Winged Beast monsters known for their focus on graveyard manipulation and link summoning. The card serves as a thematic narrative piece, depicting the camaraderie and binding commitment of the Tri-Brigade faction within the game's overarching lore.

The visual design of the card leans into the gritty, industrial aesthetic established for the Tri-Brigade series, featuring characters Shuraig and his allies in a moment of tactical coordination. By including it in the 2021 Tin, the developers aimed to increase the accessibility of specialized support cards for players who might have missed them in the original set releases. While the card is a common rarity, it remains a notable example of the game's commitment to expanding existing monster archetypes through dedicated spell and trap support.