1. Warwick the Holy Spirit (season 4)

The power of Warwick came from Riot's revision of the Holy Spirit in early 2021. Accordingly, after attacking six times or dropped to less than 50% of the blood, the Holy Spirit sublimated, eliminated all adverse states and reduced 50% of damage to receive and deal 50% of the standard damage in 4/7/10/14 seconds. For Warwick, the amount of SMPT plus will increase the horrible attack speed.
Not stopping there, when defeating a enemy general, Warwick will cause “panic” to the surrounding generals, thus, avoiding attacks of damage shock. This combination is invincible and just “spam” this flag to enter the Top 4. Although this flag has received many complaints and Riot also performs power reduction, but the Holy Spirit Warwick has always been popular until the end of season 4.
2. Executioner (season 4.5)

In version 4.5, Riot changes most ethnic/systems in the previous version. However, there is a tribe that is still retained as the executioner. Riot Games has added this tribe to add 3 powerful teams, Olaf, Tryndamere and Samira. With this squad, attack is the best way to defend.
Olaf, Tryndamere and Samira were in one hand to take on the main role. In version 11.2, Olaf is a superhuman. When Olaf was reduced, Tryndamere emerged as a “monster” in the 11.5 version. And then it was Samira's turn. No version in the 4.5 season but the executioner is not in the top of the strongest squads.
3. Mordekaiser Long (season 5)

Unlike Olaf and Tryndamere in season 4.5, Mordekaiser does not possess fast attack speed, but each attack is very strong. Mordekaiser creates a shield equivalent to 50% of its maximum blood in 5 seconds. During the effect, Mordekaiser's attack deals 450/600/5000 magic damage and getting an additional box.
In addition, the Corps provides additional attack speed to help Mordekaiser attack quickly as well as deal more damage. Right from its inception, the flags have realized that Mordekaiser should be a more damage than the resistance. Mordekaiser's automatic attacks also deal magic damage, which means earning Hextech guns will regain blood levels equivalent to the number of attacks. Therefore, not only immortal, Mordekaiser has surplus to defeat the opponent.
4. Zombie (season 5.5)

Zombies can be considered as the most prominent flag in season 5.5. With the addition of Fiddlesticks, the zombie becomes much stronger thanks to the activation of 5 early and summon 3 -star Sion. On the other hand, when combined with the evil god, the zombies are also suddenly increased in defense and widespread control.
In season 5.5, the Ta Ta Shangzer squad used Fiddlesticks as the main force. This is also a better time for players to “spam” this flag. Even if you cannot find Fiddlesticks, players can still use Velkoz, Heimerdinger as the main force. Thanks to the good resistance from the zombie and the evil god, the damage of these two generals will be a nightmare for every opponent.
5. Katarina assassins (season 6)

As soon as season 6 was launched, Katarina immediately showed his “error”. Only 2 gold, but Katarina's skill set can deal large damage on a large scale. In particular, with the assassin clan with many cheap champions such as Twitch (1 gold), Talon (2 gold), SHACO (3 gold) or even help from the technology core, Katarina can benefit at 4-6 assassins early.
This is invisible to make Katarina extremely scary when it can destroy all the opponent's next route, even if it is a 4-5 golden general. However, thanks to his popularity, Katarina was “touched” by Riot in version 11.24. Although not too “error” like the previous two versions, but Katarina is still a very strong chess pieces in the first stage – in the middle of the match.