Rell
To say it plainly, Rell is currently the most defensively oriented unit available. Without needing too many items or a high level, Rell still provides players with strong crowd control and shielding abilities. In the past, the role of shielding and protecting allies was typically handled by support-oriented units. However, Rell can perform this task effectively while still ensuring survivability.

Therefore, Rell can help players save a position in their lineup for additional damage-dealing, tanking, or high-impact effect units. This is incredibly important in the late game and can lead to victory. Additionally, this champion already possesses strong tanking capabilities from the Knight’s damage reduction effect and substantial armor due to the Armored trait. Thanks to such an ideal champion profile, Rell is becoming a very hot unit.
Diana
Although she doesn’t have the trait – class synergy or perfect skills like Rell, Diana is currently strongly supported by the meta. With team comps like Shadow – Assassin or Warrior – Dragon dominating the meta, Diana will undoubtedly appear constantly in matches of Teamfight Tactics. Even if you don’t use those team compositions, it’s advisable to purchase Diana as she is crucial for countering and defeating Kayle, a very strong carry at this time.

While she doesn’t deal excessive damage, Diana’s skill provides significant burst potential during fights. By repositioning enemy units, Diana’s skill aims to disrupt the enemy team’s formation. This causes the opposing carries to be pulled out of their safe positions, making them very vulnerable. This is considered an invaluable tool for the Warrior – Dragon and Shadow – Assassin compositions to achieve victory.
Ryze
As the Mage – Zombie lineup becomes increasingly popular, the frequency of Ryze appearing in matches has skyrocketed. Moreover, this champion possesses an extremely strong trait – class and can provide many beneficial effects for your team. He is indispensable for early activation of important milestones like 4 Zombies, 6 Doom, and unlocking immense power for the team in the mid-game.

Not only that, this champion also provides a considerable amount of magic resistance with the effect from the Mystic trait. In a meta where many players are using the Mage composition, Ryze’s Mystic trait becomes even more valuable. Not to mention that Ryze possesses a very strong stun ability to hinder the attack capabilities of Assassin and Warrior units. With such a strong trait – class synergy and useful skills, it’s easy to see why Ryze is a highly contested unit.