For many team compositions, the more traits you can activate, the stronger they become. However, there are also many compositions with incredibly powerful champions, to the point where players are willing to sacrifice 1 slot for traits to use 2 spaces on the board for the same unit, even if that champion has no items and won’t activate any traits.
Here is a list of compositions that can use the same champion and still remain incredibly strong:
6 Shadow Isles x2 Xerath Composition

This is one of the hottest compositions in the current meta, the reason being it maximizes the power of Xerath while activating Zeke’s Herald, increasing attack speed by up to 30%, combined with the buff from 2-star Karma, granting about 105% attack speed for Xerath. Additionally, Shadow Isles is a composition that is currently “neglected”, so there are relatively few players using it, slightly increasing the odds of reaching 3 stars for this composition.
Having x2 Xerath in the composition will double the magic damage output, increasing Xerath’s ability to last-hit enemies – which means doubling the chance of stunning enemies for 1.5 seconds. If you want to balance physical and magic damage, you can also equip items for Jhin as a secondary carry.
In conclusion, this composition lacks tankiness, and Shadow Isles needs… a sacrifice to buff damage, so the best stalling option would be Zz’Rot Portal, and adding Voidlings will greatly benefit this composition.
“Gangplank and the Rest” Composition

When playing the Pirate composition, there are actually many strong items that can be used for the second Gangplank. However, many mistakenly believe that just adding a few traits will significantly increase the strength, forgetting that the main power of the composition lies with Gangplank; just having another Gangplank makes it much stronger. So when there are x2 Cannon Barrage on the enemy’s composition, the damage and stun duration they have to endure will be much greater, and the drop rate will also be higher when 2 Gangplanks eliminate the enemy team instead of other non-Pirate champions.
Duelist Cannonier Double Carry Composition

While many are wondering whether to level up to 9 and what champions to add, choosing to use 2 Jinx on the board will be an excellent choice when you have enough carry items for them. Because at that moment, the 2 carries, Jinx, will quickly take down the target Blitzcrank, doubling the damage when Jinx activates the passive and sweeping the enemy team in the blink of an eye. Additionally, since Jinx deals both physical and magic damage, opponents find it very difficult to counter that mixed damage source.
After having the appropriate champions, you can also remove Graves and replace him with Kayle if the duo of the Saintess is strong.
Void Brawler x2 Vel’Koz Composition

Usually, in this composition, you would use an additional Assassin like Fizz to boost Kha’Zix’s power and provide crowd control for the team. However, if you already have magic items for Vel’Koz as a carry, adding another Vel’Koz to the field is the best choice. Because with strong true damage, just 1-2 casts from Vel’Koz would make it very hard for the enemy team to resist; if 2 Vel’Koz cast 2-4 times, even the toughest carries would evaporate before the colossal power of the Void.
After that, if you level up to chess 9, you can add any champions you want like Thresh, Fizz, or Xerath,…