Medieval heraldic shield, featuring a black wasp in flight at the center of a golden field, symbolizing vigilance and prosperity. Beneath the wasp, two silver wavy lines represent a flowing river. Ornate medieval border detailing surrounds the shield, with a banner below bearing the motto 'Un dard, une victoire' in elegant gothic script. The design is balanced, vibrant, and rich in detail, suitable for a noble house's coat of arms, displayed on a textured parchment background for authenticity.