The Serpentine Marsh is Chapter 9 of the Summits of Time, which can be unlocked after stage 14-4. It's a fairly simple adventure with no tricky puzzles or tricky riddles. You only need the heroes of the correct faction to defeat the 4 main enemies. The reward is a new artifact Blade of Dara, which is great for attacking characters.
Recommended relics
Best Legendary Relics:
Recommended heroes
In this chapter, bosses are not immune to control, so choose these heroes. Below are the top three:
Passage
1... Talk to Hogan in the first location, who will give you a relic called the Banner of Courage. At the end of each battle, be sure to switch to manual combat so that you can use your ultimate at the beginning of each stage and gain an advantage over your enemies.
2. After obtaining the relic, you will find two camps. Attack any of them according to the image below. After the destruction of the first camp, take the relic, and then attack the second camp with the same team. Don't forget to take damage relics and at least two health regen relics. If they are not there, take the energy of recovery and protection.
3... Scroll to the right until you see another small camp (screenshot below). Destroy it and take the relic. The Thug is recommended here, but your normal team can handle it too, using the two good relics you got earlier.
4. Important! Next, you will definitely need Shemir in the team. Destroy the Light Bearer camps. There are no relics in the first camp + there are high-level enemies, so you must have at least three Graveborn, or, as I said earlier, your squad must be supported by Shemira.
5. Next, you will have two Light Bearers camps to choose from: one camp is a duel with several levels, and the other is a small camp with one Savage. Attack the weaker camp and recruit the Savage (Tazi and Lika are recommended). If you already have both options, choose Kaz.
6. Destroy two Light Bearer camps next to each other. The relic is only in a small camp near the Temple of Life.
7. Remember the farewell duo of the Light Bearers? It's time to fight them. After the victory, take the relic and move on.
8. The next thing you have to do is go to the Graveborn camp as shown in the screenshot. Use your newly hired Savage and form a trio of Savages, including Shemira. There are no relics in this camp.
9. Attack the two camps as shown in the screenshot below, grab the relics, and recruit Lucius or Belinda. If you don't have any of them, choose Lucius.
10. You now have all the equipment you need to complete the Serpentine Swamp. Start destroying all of the Thrasher camps along with your newly hired Light Bearers. Lucius and Belinda are enough for an easy victory.