Xilonen's main benefits are that her RES Shred lasts 50% longer and across multiple\r waves of enemies while also being able to act as a healer. Kazuha instead\r brings increased Elemental Application from Swirl and\r crowd control in the form of grouping and interruptions.\r \r Kazuha's best situations are in Quicken/Aggravate\r where the Electro Swirl and Absorption allows him\r to contribute damage, or in Freeze teams where he\r provides incredible crowd control.\r \r Xilonen on the other hand is easier to fit into a wider range of teams because\r she can not mess with reactions and is mechanically simpler. The fact she\r is also a healer provides impressive role compression which allows her to be a\r great substitute for many healers or even Zhongli if\r being used for the RES Shred and not Interruption RES. Additionally, Xilonen pairs\r really well with Furina who is key in many teams.\r