The multiverse has it's constants, as do all things. But it doesn't mean that it never deviates from trodden paths.
Infinite realms, infinite possibilities.
Just as it is likely that things will proceed the way they are 'fated' to, it is equally likely that they will veer off their intended path due to any small variable.
Among the countless stories of the multiverse, there is a story that, while not necessarily unique, is quite harrowing.
When the Gjallerhorn is blown, the Horsemen ride, and the Trihexa crawls from the sea, the End War begins.
In one particular timeline, it is Thor, not Odin, who leads the Norse pantheon into battle.
The battle against Jormungandr, while it should have resulted in the death of both beings, sees a much different resolution.
The god of thunder, though grievously wounded, remains standing.
Battle-hardened but not defeated, Thor leads the Nordic deities to victory in the End War.