In Norse mythology, which legendary product launch strategy was used to introduce Gungnir, Odin's magical spear, to the mythological marketplace?

Throughout history, mythological product launches have captivated cultures worldwide. From Prometheus 'launching' fire to humanity to Thor's hammer Mjölnir being 'released' to the god of thunder, these divine product introductions shaped civilizations. This poll tests your knowledge about how ancient cultures 'marketed' and introduced legendary items and artifacts within their mythology. Can you identify the correct product launch strategy from folklore that mirrors modern practices?

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It was crafted by dwarves as a contest entry to prove their superior craftsmanship against rival dwarf smiths, essentially using a competition as a product launch strategy
It was revealed during Ragnarök as a limited-time offering, creating urgency among the gods to acquire divine weapons
It was introduced through divine dreams sent to warriors, an early form of subliminal advertising to create demand among Odin's followers
It appeared in a rainbow bridge pop-up shop where gods could test the spear's accuracy before committing to ownership