A hero summoning goes wrong like horribly wrong
the people who were summoned fused so they recite the incantation again and try to summon different heroes but they also fuse with it
the church lock the thing in their basement as they are not sure what they can do with it, it is a white elephant meaning it's not something you can get rid of (because of religion rules), it is costly to keep (I mean if you found out your religion accidentally summoned a twitching mass of flesh would you follow it?).
The main character is going to escape the basement 5 years after the elves captured the capital for glory, a small legion of soldiers are going to open the basement and release the hero glob thing.
the mc at this point is as smart as a 5 year old, he can feel his own body calling for the other heroes, and so like a small child would he becomes curious and wants to reunite with them (what it is going to do them is a different question.)
after it has completed its form, it will travel to the earth and consume the whole planet, time skip, it will now condense it self into a human but its body will be writhing horribly and wigling, its bones are jagged and like thorns pierce the skin. Worst of all is the eyes that are dark yet shining, the pupils is only a small circle of white that constantly moves.
It will announce what it has done to the readers which is gaining a story, a story is a power you get from the actions you have commited, for actions to become a story is the actions getting an end such as living completely naked till you die.
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