Loot keys are obtained through various means depending on the rarity or the type of key. Depending on the variant of the key, the loot can range from common supplies such as Magic Logs to Iconic and powerful weaponry such as Dragon Claws. They can be opened at the loot chest outside of the bank at home.
Loot Key (Daily)
Loot Key (Daily) can be obtained by completing daily tasks at the Daily Board
Loot Key (Common)
Loot Key (Common) Is obtained from various tasks in the game, most notably from monster drops & achievement tasks. The loot is mainly comprised of supplies with a few early-game unique rewards such as dragon equipment. Loop halves and Tooth halves can be combined to create common loot keys.