This effect remains active even when Xilonen is not the active on-field character.

At level 10, Xilonen can decrease an enemy’s Elemental RES by 36% for 15 seconds.

While Xilonens offensive capabilities are largely tied to her skill, she relies on burst for her defensive utility.

When leveling up Xilonens abilities, prioritise her skill first then her ultimate second.

You dont need to level up her normal attacks unless you want her to take on a DPS role.

Artifacts

Xilonens go-to artifact set is the 4-piece Scroll of the Hero of Cinder City.

Teams built around powerful elemental reactions like Vaporize and Overload will work best.

Xilonens ability to provide continuous healing notably lets her synergise with another top-tier support inFurina.

For more information on whats coming in Genshin Impact version 5.1, checkhere.