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I selected 5 broken comps to help you start Set 11 with a victory. Also for each comp, I link a more in-depth guide so you can either use this article as a cheat sheet or use the guides as a support to help you learn more about the game!
DRAGONLORD JANNA
This comp aims to drag fights with the shield and heal from your team so you can win fights. Check how to play it here: https://www.tacter.com/tft/guides/janna-dragonlord-reroll-is-the-best-2-cost-reroll-comp-to-start-set-11-challenger-guide-ba47944d
MYTHIC BARD & TAHM KENCH
Mythic gives tons of stats to your units once they become Epic and that's perfect for both Bard and Tahm Kench. Check how to play it here: https://www.tacter.com/tft/guides/how-to-play-bard-tahm-kench-reroll-set-11-challenger-guide-1162fe05
Edit: replaced Bard's items with double guinsoo + gunblade and Tk's items with Ionic Spark, Steadfast and Dragon's claw for better optimisation
DUELIST TRISTANA
INVOKER LILLIA
Another 3 cost reroll but this time it's with Tristana and Volibear. This comp also has a great late game cap with many 4 cost and 5 cost who can become secondary carries (Irelia, Lee Sin, Rakan and Wukong). Check how to play it here: https://www.tacter.com/tft/guides/how-to-play-duelist-tristana-and-volibear-set-11-challenger-guide-f42f5c88
This is one of the most powerful 4 cost / 5 cost comp to play at the beginning of the set. Aim to play strong board fro nearly to late game to have enough HP and gold to play this comp.
Check how to play it here: https://www.tacter.com/tft/guides/how-to-play-invoker-lillia-set-11-challenger-guide-d039f50f
FATED SYNDRA
When you link Yasuo and Thresh, they will give a nice shield and resistance (armor + MR) to all other Fated units as well. Use this to have an advantage in fights.
Check how to play it here: https://www.tacter.com/tft/guides/how-to-fated-syndra-set-11-challenger-guide-bfcd7021