Curtain of Leaves is a new Permanent Event introduced in Genshin Impact 3.1 that allows players to unlock the 4-Star Dendro unit Collei for free.
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Datuakrajoangek. Tukang Sayur on Twitter: Berandai2 yang bisa
Probably Tighnari's last banner: Tighnari and Zhongli (and Collei) banner's character material sheet! : r/Genshin_Impact
Genshin Collei Build & Weapon - GameWith
Genshin Impact: How To Unlock Collei
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Genshin Impact - Collei's Ascension Materials Farming Guide - GameSpot
Genshin Impact 3.0 to giveaway free Dendro character Collei, says leaker