Rosaria is a playable 4-star character in Genshin Impact. She is one of the strong Cryo users in the game and can do a lot with a good team. She is affiliated with the Church of Favonius, located in Mondstadt, one of the seven nations in Teyvat.
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She was released back in April 2021. She has been available along with other characters in Albedo and Eula's rerun banner that started on Nov 24, 2021. Many weapons and artifacts are great on Rosaria
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