One of League of Legends’ rotating game modes is the Ultimate Spellbook, often considered one of the most popular alternate modes in the MOBA. Fortunately, it will return with the upcoming patch 12.16 after getting added to the PBE test servers any time now.However, while Ultimate Spellbook will make its way to the PBE test servers, Riot Games has confirmed that the game mode this time around will arrive with a bit of a twist.Reina Sweet@ReinaSweetSoon on PBE next week (and live not long after), there will be a tiny % chance for a particularly silly type of Ultimate Spellbook game to occur.This is my goodbye pun for League.90557Soon on PBE next week (and live not long after), there will be a tiny % chance for a particularly silly type of Ultimate Spellbook game to occur.This is my goodbye pun for League.❤️ https://t.co/Y9ZjVjQfB2Developer Reina Sweet mentioned in a recent tweet that as a farewell gift to Riot and the League of Legends fan base, she would help introduce a customized and unique edition of Ultimate Spellbook to the title.She mentioned in the tweet:“Soon on PBE next week (and live not long after), there will be a tiny % chance for a particularly silly type of Ultimate Spellbook game to occur. This is my goodbye pun for League.”League of Legends will get uniquely customized Ultimate Spellbook modeReina Sweet@ReinaSweetThis upcoming Friday will be my final day at Riot. Coming up a couple weeks just short of the 11 year mark. Going on to a new game-making adventure soon (that I’m super super excited for ). 🧵 1/842813This upcoming Friday will be my final day at Riot. Coming up a couple weeks just short of the 11 year mark. Going on to a new game-making adventure soon (that I’m super super excited for 😄). 🧵 1/8For those unaware, Reina had previously announced that the coming Friday would be her final day at Riot. As a parting gift to the League of Legends community, she will introduce a customized Ultimate Spellbook mode.The developer confirmed that the alternate mode would return with a little bit of twist, and fans can expect it to have a sort of a “One For All” matchmaking where all the players will be made to select the same ultimate ability.What makes Ultimate Spellbook so unique and popular amongst fans is that it allows champions to wield the ultimate ability of another champion, making for some enjoyable and unique gameplay experience.Now, it will be pretty interesting to see the type of customizations the developers will look to implement in the game mode once it makes its way to the PBE and eventually in the official patch, due in two weeks.Reina Sweet@ReinaSweetAnd when the mode does occur it's weighted in favor of having a particularly large impact on the game.1252And when the mode does occur it's weighted in favor of having a particularly large impact on the game.Reina also mentioned that “when the mode occurs, it’s weighted in favor of having a particularly large impact on the game.”What this impact will be is up for speculation, but users will soon find out once the mode hits the test servers and makes its way to League of Legends patch 12.16, expected to drop on August 23 or 24, 2022 with the Udyr rework.