How Rare Are My Unidentified Legendary Legs?

Hello! I started Wynncraft today and when I was grinding to combat 9 to use some armor, I dropped some legendary unidentified pants. How rare is this drop?

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Item tiers rank from (lowest to highest) Normal, Unique, Rare, Legendary, Fabled, and Mythic. I don't entirely know of the EXACT drop rate of a Legendary, but it's definitely more rare than Rare items, and Legendary items tend to be some of the most useful items (not always the case, but most of the time).

Adding onto drop rates, Loot Bonus will increase the amount of loot dropped/found in chests, whereas Loot Quality will increase the rarity of items dropped/found in chests