![Ruby](https://i2.wp.com/genshinbuilds.aipurrjects.com/tof/matrices/iconLarge_matrix_ssr16.png?strip=all&quality=75&w=384)
Ruby
SSRMatrix2 Pieces
Increases flame ATK after casting weapon skill by 8%/10%/12%/15% for 25 seconds. If multiple star rating effects are triggered, the one triggered last prevails. This effect does not stack.
4 Pieces
Grant Mastery after casting weapon skill for 15 seconds, with a cooldown of 15 seconds (Mastery shares cooldowns across levels). Mastery is not stackable. Increases flame damage by 2%/2.5%/3%/3.5% every time the target is hit with a normal attack until the end of Mastery, adding a maximum of 1 stack every 0.2 seconds, up to 6 stacks. After 6 stacks, gain a shield that can block damage 1 time.