This infinite mana and damage bug ruined ranked

Nicholas James Published 27/03/2023

This infinite mana and damage bug ruined League of Legends’ ranked, and it comes from the most unlikely of places, the Undo button in the shop.

A recent bug in League of Legends was responsible for players getting effectively infinite mana and damage, and it was ruining ranked games. Rather than some other bugs, which require very specific champions to occur, this could be pulled off by any champion in any game. It wasn’t any of the usual culprits for a bug. This time it was the Undo button in the item shop.

Infinite mana and damage bug takes over ranked

Here’s how the bug worked, and it’s surprisingly simple, but it’s still in the game. The bug was very simple. If a champion had Biscuits of Everlasting Will in their inventory, they could repeatedly sell the item and undo the sale. Due to an unintended interaction, undoing the sale of the biscuit would increase their maximum mana. These are only available through the Biscuit Delivery rune in the Inspiration tree. The Biscuits are only supposed to give bonus mana when consumed, but something in the code was treating selling the item as though the champion has used it. This was used in combination with Muramana, which gives attack damage based on a percentage of total mana for effectively infinite damage.

The bug was supposed to have been fixed in Patch 13.6, and the patch notes said that the issue had been fixed. However, as fans and content creators quickly noticed, it hadn’t been fixed at all. As a result, the Biscuit Delivery rune has been temporarily disabled until the League of Legends developer can fix it. Until then, you won’t be able to get everybody’s favorite snack for the laning phase. It’s not clear what makes it so hard to fix, but the rune will remain disabled until a solution is found.

Nicholas James

About Nicholas James

Nicholas James is a gaming writer with a passion for all things geekdom, as well as live theater. Nicholas is best known for covering League of Legends and other top MOBA titles, but his expertise covers numerous games across multiple genres. When not watching the LCS or playing the latest new release, Nicholas can be found doing some tabletop gaming and painting his favorite miniatures. Nicholas has also published with Hotspawn, TheGamer, Dexerto, Esports.gg and other industry outlets.

View full profile

Read Also

League of Legends

Which Teams Should Be Panicking Ahead of LoL Worlds 2026? Ben Boland The 2026 League of Legends World Championship is fast approaching, with the tournament beginning on 15 October. 19 of the best teams that esports has to offer will do battle in North America for a shot at the Summoner's Cup. For teams like Bilibili Gaming and Hanwha Life Esports, their fates are already sealed without stepping foot on the Rift again, but for the rest of the teams, they will ...

League of Legends

Predictions For Gen.G vs Dplus KIA: Best Value Odds at GGBET Ben Boland Two of the more in-form teams in the LCK go head-to-head as Dplus KIA takes on Gen.G on 22 August. Despite the odds leaning more towards a Gen.G win, there are some solid bets to make across the board, not just simply the result. Dplus KIA have shown impressive form throughout the summer and so shouldn’t be discounted in this series. In this preview, we will highlight the best chances to ...

News

The Esports Nations Cup Has Been Postponed to November 2027 Ben Boland The 2026 Esports Nations Cup has been suspended until 2027. The Esports Foundation announced the delay on August 18, citing ongoing regional uncertainty. The inaugural competition was scheduled to take place in Riyadh, Saudi Arabia, comprising over 100 national teams and featuring 16 different games, including League of Legends. According to the Esports Foundation, this decision follows ongoing developments in the region and consultation with key stakeholders. Moving the event ...

Esports Betting

These Are Our Betting Tips for the League Championship Series Week 4 Ben Boland The 2026 LCS Summer Split is in full swing, with the eight North American squads all vying for a chance to represent the region at this year's World Championship. With Worlds being on home soil, there is more than just a ticket to Worlds at stake. Each series in the regular season carries weight, as the standings will determine their seeding and potentially their fate in the playoffs. Week four ...

League of Legends

Caps To Be Announced As Third Inductee in the LoL Hall of Legends Hannan Mundia After Faker and Uzi were inducted into the Hall of Legends in 2024 and 2025 respectively, the European League of Legends player Caps will be the next to get the same treatment. League of Legends has been a cornerstone in the professional gaming scene for over a decade. In that time, a handful of players have managed to leave their mark for all future fans and fellow players to learn ...

Esports Betting

MLBB is the most-watched game from the EWC, and it’s hard to see another game beating it Michael Hassall The Esports World Cup 2026 has officially passed its midway point and viewership figures for the tournament have surpassed many expectations so far, as per Esports Charts. The viewership tracking site revealed new statistics for the event on Aug. 6, showcasing just how many games had set new records in viewership, including one name leading the way in views: Mobile Legends: Bang Bang. MLBB leads the viewership charts with the ...

League of Legends

LCK 2026 Rounds 3–4 Preview, Schedule, Predictions, and More Hannan Mundia 2026 LCK Rounds 3-4 are slated to start soon, and this preview highlights the schedule, our expert predictions, and everything else you need to know before watching. The LCK has been upside down recently. Teams that were considered absolute powerhouses are seemingly falling off, while previous underdogs have been causing upset after upset. 2026 LCK Rounds 3-4 are starting soon, and the big question here is which team will reign ...