The Power of Void Mage Kassadin
Essentially, the Void Mage trait will help Kassadin become a strong core champion with high mobility and damage. With a teleport range of up to 3 tiles, this champion can quickly engage and take down the enemy’s backline. In a meta where champions like Lux, Azir, and the Sorcerer class are proving to be very strong, Void Mage Kassadin is an excellent counter choice.

Building the Void Mage Kassadin Team
At the beginning of the game, players should activate the 4 Guardian trait with Kassadin, Poppy, Maokai, and Taric. Soraka is also a strong unit as the Targon effect increases the shields Kassadin generates from his ability. Additionally, acquiring Kassadin early boosts the chances of obtaining the Void Mage trait.

By mid-game, players should replace Poppy with Shen for additional tankiness. Aphelios and any Marksman will be a good choice to soften the enemy’s frontline, allowing Kassadin to finish them off. Moreover, reaching 3 Targon with Aphelios is extremely valuable at this stage.

After reaching level 7, players should stop buying experience and Refresh the Shop to find ways to upgrade Kassadin to 3 stars. Taric and Soraka should also be leveled up to their highest tier. After achieving this goal, players can level up to 8 and complete the team with high-value units like K’Sante and Senna.

For the Legend choice, Poro will be the best option for this team as it increases the chances of the Void Mage trait appearing. It is important to remember that this team can only be built when players possess the Void Mage trait. In terms of itemization, Kassadin will need the Gauntlet of the Protector, the Rod of Ages, and Bloodthirster (or Hand of Justice).
Conclusion
With the nerf to the Legend Draven, team compositions that do not rely on him, like Void Mage Kassadin, are proving to be quite strong. This is expected to be a team-building option that will surprise opponents and make it hard for them to find a counter.