Which in-universe Fire Emblem is the Best

The Binding Shield- A shield forged by the fang of Naga to help slay feral Earth Dragons. This item appears in Shadow Dragon and the Blade of Light, its sequel Mystery of the Emblem, and their respective remakes Shadow Dragon and New Mystery of the Emblem. Also known as the Pedestal of Flames in Awakening where it can bless Falchion so it can slay Fell Dragons.

The Crest of Velthomer- The crest of the Velthomer house in Fire Emblem: Genealogy of the Holy War and Fire Emblem: Thracia 776.

Imperial Seal of Bern - The seal that locked away the Demon Dragon Idunn in Fire Emblem: The Blazing Blade and Fire Emblem: The Binding Blade.

The Sacred Stone of Grado The initial form of Grado's Sacred Stone in Fire Emblem: The Sacred Stones, which would later be split in two, with one half becoming the Dark Stone.

Lehran's Medallion - The medallion that seals Yune in Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn. It radiates pure chaotic energy.

The Omega Yato - Final form of the Yato blade in Fire Emblem Fates. It is also referred to as the "Seal of Flames"

The Crest of Flames - One of 22 different hereditary Crests in Fire Emblem: Three Houses and Fire Emblem Warriors: Three Hopes.

The Crest of Flames is a manifestation of the power of the Progenitor Goddess of Fódlan.

Emblem Alear - The thirteenth Emblem in Fire Emblem Engage.

The Opera of Light - An operatic ritual in Tokyo Mirage Sessions ♯FE required to counter the Opera of Shadows.

The Shield of Flames - A shield used to seal away the Chaos Dragon Velezark in Fire Emblem Warriors.