Teamfight Tactics: Mid-Set Update For Runeterra Reforged
Teamfight Tactics, a renowned auto chess title by Riot, has recently received its mid-set update for Runeterra Reforged. This update for Set 9 introduces several modifications including the introduction of new units and traits while eliminating some old ones. The 9.5 mid-set saw the removal of the traits Yordle, Shadow Isle, and Deadeyes, thus making room for fresh ones - Vanquisher and Bilgewater.
The Fall of Yordle Trait
In Set 9, Yordle was one of the lesser exploited traits. It mainly focused on re-rolling the lower-cost units to enhance their power. Enabling a player to three-star three of their units would transform their strongest Yordle into a 4-star unit, thus augmenting their power and providing a bonus to their ability. However, this trait was barely used after the start of set and with the advent of Set 9.5, the ability to create a 4-star unit has been fully removed from the game.
The Rise of 4-Star Heimerdinger
Players, though, were still intrigued by the possibility of getting the elusive 4-star Heimerdinger in Set 9.5. Despite the removal of trait, they can still attain a 4-star Heimerdinger who is a 5-cost unit and has his very own turret that fights alongside him. 4-star Heimerdinger has the ability to unleash a surfeit of electric grenades, technically deleting the entire enemy board at the beginning of the round, thereby making it an instant first.

Several theories were put forth by players wanting to achieve the elusive 4-star Heimerdinger in Set 9.5. Some speculated that having three 3-starred units might trigger the condition, but no concrete answer was provided.
However, Mortdog, the lead designer of Teamfight Tactics, clarified the conditions required for a 4-star Heimerdinger. According to him, players would need to 3-star both Poppy and Heimerdinger. This means that players will have to actively search for both units if they wish to bring back the 4-star inventor.
Although accomplishing a 4-star Heimerdinger is a tough task given that Poppy is a 1 cost unit and Heimerdinger is a 5 cost unit. Those who manage to do it will be rewarded with an extremely rare easter egg that will most definitely be applauded by the rest of the lobby.