Yuumi was hit with a series of balance changes in League of Legends Patch 13.1B, which nerfed her base stats, passive, W, and E. The changes were met with backlash, but Riot Games developer Phreak defended the balance team’s decisions.
The former LCS shoutcaster explained on his YouTube channel yesterday that the primary goal of these changes is to see Yuumi disappear from professional play. Phreak underlined the nerfs to her base stats and passive will hardly impact Yuumi in solo queue since these abilities are abused by pro players, not by regular support players.