Which customer loyalty innovation did 'Mythic Bazaar' implement in 2022 that led to a 45% increase in millennial engagement while connecting to Norse mythology?

The world of mythology and folklore has inspired countless marketing campaigns and brand identities. From Nike's winged goddess of victory to Starbucks' siren, ancient stories continue to shape modern retail experiences. This trivia question explores how a major folklore-themed retailer adapted its customer loyalty program to appeal to diverse demographic interests while maintaining its mythological roots.

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The 'Yggdrasil Rewards' program where customers earned digital 'leaves' on a virtual world tree that unlocked different realms of benefits
The 'Mjölnir Points' system where customers accumulated points shaped like Thor's hammer that could be 'struck' for instant discounts
The 'Bifröst Bridge' tier system where customers progressed through rainbow-colored levels to reach exclusive 'Asgard' status
The 'Runes of Return' program where customers collected digital rune stones through purchases that could be combined for mythic rewards