Forest God
In the 11.1 update of Teamfight Tactics, the Forest God composition has been heavily nerfed in both defense and attack capabilities. In terms of defense, the maximum energy of Lulu has been increased to 150, which means the frontline units of Forest God no longer receive significant health buffs. On the attack front, the maximum energy of Veigar has also been increased by 10 points, causing this unit to store skill damage much longer than before.
These changes have made the Forest God composition overly reliant on energy items. It is advised that you should only play the Forest God composition if you have enough materials to combine into 2 Blue Buffs. You will even need decent defense items to equip Hecarim early. If you focus solely on building skill damage items, the chances of the Forest God composition being eliminated early are very high.
Mage
The two nerfs directed at Lulu and Veigar have greatly impacted the Mage composition, making this team comp noticeably weaker. The current Mage composition places all its survivability on Annie, who has an extremely powerful shield ability. However, she is still just a 2-cost unit, and even at 3 stars, Annie can be easily taken down. Therefore, Lulu plays a crucial role in keeping Annie alive and providing sustain for the backline Mages to deal damage.
With Lulu’s maximum energy raised to 150 points, Annie is also more vulnerable than before. Once the main tank of the composition is eliminated, the fragile units behind her are unlikely to survive. This has caused the Mage composition’s win rate to drop significantly, so it is best to avoid using it for climbing the ranks at this time.
Marksman
Not originally a meta composition, the nerfs to Teemo and Jhin have made the Marksman team even weaker. With the reduction in Jhin’s critical damage, the amount of damage the Marksman composition can deal is significantly less. Furthermore, the slim chance of snowballing the game has been thwarted with Riot reducing Teemo’s skill damage. Remember that Jinx had also been heavily nerfed previously.
These updates have left the Marksman composition without a sufficient power threshold in matches. Thus, this composition is easily outpaced by other team comps in terms of power growth and damage output. Essentially, you should avoid Marksman units at this point, even if they are in the Chosen form. If you stubbornly try to build a Marksman team, the chances are high that you will be eliminated very early.