Foul Conclusion is the fourth Quest in Act 5 Chapter 3: The Struggle, and was released on September 6, 2017. This Quest promotes the use of Cosmic 
Champions and reduces the Attack Rating of Champions from all other Classes.
It contains 5 paths and ranges from 10 to 15 Opponents per path. There are 3 gates requiring Cosmic, Tech and Mystic Class Keys. A Cosmic and Tech Class Key can be found as Path Rewards, while a Mystic Class Key can be obtained by completing the Quest.
It is preceded by 5.3.3: Dire Warning and succeeded by 5.3.5: Force of Will.
Nodes[]
Global 
[]
| Name | Effect(s) |
|---|---|
| Stellar Pulse | All Champion classes but Cosmic reduce their Base Attack by 50%. |
| Champion Boost | +300% Attack & Health |
| Iso-Infused | +50% Attack and Health |
| WARNING | A third Special Attack has been activated! |
Dialogue[]
The Grandmaster: Do not think I am oblivious to your actions, Summoner. Fraternizing with the Champions is strictly forbidden. The Grandmaster: Think of them as game pieces. Pawns, rooks, and knights. They are tools, not your friends! The Grandmaster: Should I find you are acting otherwise, you may be... dissatisfied with the results.
- Transmission #1 - Upon starting the Quest
Doctor Voodoo: Summoner, I bring word from Dr. Strange! Doctor Voodoo: His research has yielded some alarming results... it seems these splinters are part of a greater structure, as T'Challa tried to tell us. Doctor Voodoo: Their internal construction shows they are meant to be linked, linked into a singular form of some import. Doctor Voodoo: What's more... they are intrinsically tied to the very power that holds the Battlerealm stable!
- Transmission #2
Civil Warrior: Hold on, I thought the ISO-Sphere did that? Doctor Voodoo: It allows manipulation and grants might in the Battlerealm... but it does not hold it together. Civil Warrior: Are you saying that these splinters are part of some kind of... support pillar? Doctor Voodoo: Something like that. Perhaps more comparable to the first brick lain... the Cornerstone. Civil Warrior: But then that would mean... Doctor Voodoo: We may be in grave danger.
- Transmission #3
Hyperion: None may pass, and all must remain within their categories! The Grandmaster's edict is firm! Civil Warrior: Looks like he's been mind controlled as well... The Grandmaster sure is hypocritical. Doctor Voodoo: No doubt much of what he said was lies. He could never possibly convince all of us without some sort of mind control. Hyperion: You will return to your posts, or you will be returned in pieces!
- Transmission #4 - Before fighting Hyperion