Coincidetoxin

Coincidetoxin is a rare and unusual substance found only at the core of the star Nagras 15, and in the brains of Piggy.

Properties
Coincidetoxin is a non-elemental substance, in that it doesn't appear on the periodic table. It has only ever been observed in liquid state.

Coincidetoxin affects timelines. It balances out the probability of each different possible timeline it comes in close contact with. Essentially, it makes normally improbable events very feasible.

Its timeline-modifying properties apply universally, but only to events that have significance to the item or person in close contact with it.

Coincidetoxin dilutes from every timeline that it evens out. It is not known how much a given amount of it can balance timelines. Fully diluted coincidetoxin is essentially harmless, chemically inert liquid.

Appearance in Pigverse
The only natural place in the known universe where coincidetoxin can be found is the core of the star Nagras 15. Its prevalence there has only been speculated through precise simulations and trace amounts of the liquid that can be found orbiting the star in question.

The unnaturally formed organ The Härdelli which is located solely in the brain of Piggy also produces coincidetoxin. This causes unlikely events to happen in his vicinity. Most noticeably, it resulted in millions of times more deaths of alternative Piggies than what would be expected of normal sentient beings. Piggy is also considered to be the God of Coincidence of Pigverse.

Coincidetoxin can be created by very powerful deities, namely only The Alphabet Bird and John Johnson.

Trivia

 * While Piggy's birth was by design of Posu, even Posu was unable to control the wildly unusual timeline machinations caused by the Härdelli and Coincidetoxin. Posu scrambled to grant him some form of immortality in order for Piggy to fulfill his destiny as a Tribune of Posu.
 * In only very rare incarnations does Piggy, or any other mortal find out that he is the God of Coincidence.