After almost 600 days since her last featured banner in Genshin Impact, hundreds of days longer than any other limited-time characters, Eula is finally available to pull again in Genshin Impact until 25 July 2023. The five-star cryo-claymore user is now available via the Born of Ocean Swell banner, which also features the 4-star feature characters Mika, Thoma and Razor.
With the ongoing summer event, you should hopefully be able to gain a good number of freemium primogems to perhaps pull for her. However, there is also the issue that Klee, last featured in a banner in mid-2022, is available as part of the second concurrent wish banner – with a fancy new alternate costume/skin also available for those willing to splurge.

While Eula was not at the top of my personal must-acquire characters, the prospect of potentially waiting another year and a half to get another attempt at pulling her was enough to get me to pull her – sadly with no lucky pulls – but by a hard pity.
Genshin Impact is now available as a free-to-play gacha-supported adventure-RPG game on the PC, PlayStation 4, PlayStation 5, iOS and Android platforms.
