You will never not be trying to hunt down ascension materials in Genshin’s Impact, this is just how it is. One of those materials is the Tile of Decarabian’s Tower. You can get this particular item from The Cecilia Garden. The good news is that this Domain will become available to you quite early in the game.
Domains work with rotating rewards in Genshin Impact, so you can’t just roll up to the Garden and farm it any day, you will need to wait until one of the below days to get the Tile of Decarabian’s Tower.
- City of Reflections – Monday and Thursday
- Altar of the Falls – Sunday
If you really need to get your hands on it quickly, you can purchase it from the With Wind Comes Glory souvenir shop in Mondstadt. It will cost you 4 Anemo Sigils for 1, and you can purchase up to three of them. You will normally need at least three to ascend a weapon. If you want to get Anemo Sigils, you will need to farm chests in Mondstadt, as they can drop from them there.
You will need Tile of Decarabian’s Tower to ascend weapons like the Favonius Sword, Ferrous Shadow, Magic Guide, Raven Bow and the Bell, and remember that you will also need other materials to ascend them, so always check what you need to get the job done under the Weapon section of the character screen. The good news is that this ascension material drops from a pretty low-level Domain, so farming is quite easy, and it will only cost 20 Original Resin to pull the reward when the Domain has been finished.