Every hundred years or so it feels like a wedge is driven into the world almost by design. Something, whether it be from another world, a gift from a god, or summoned from things unknown, appears--and humanity is irrevocably changed. And just as fast as it appears, it vanishes, leaving the world to brush apart the ashes... if they can even tell that there are any, anymore.
But what arrives isn't necessarily destined to be bad. Just... different.
Like how now, right now, that time has come again--and somewhere, someone stumbles upon 8 vials. Mysteriously, conspicuously placed wherever they arrived by nobody. Of them, there is one for each color; Red, Orange, Yellow, Green, Aqua, Blue, Purple, Pink.
Each of these vials does something chaotic and powerful to whoever applies them, changing their shape--either temporarily or permanently, depending on how lucky the one applying them is. And, further, different methods of applying them change their effect!
You can drink the vials to have a full-body effect, rub them over you for a partial/specific effect, or inject them with handily-supplied needles for a far more pervasive effect.
The red vial is regularly shaped, a simple short but tallways cylinder. It has the 'male' symbol on it.
The orange is the same, but not rounded, with hard edges. It has an arrow moving two ways on it.
The yellow one is a perfect circle, an orb. It has sparkles as its symbol.
The green one is a pyramid, the symbol showing a rectangle dividing in half.
Aqua is a square, showing what looks to be a square being pushed flat into the ground.
Blue is a rounded hourglass shape, with the female symbol.
Purple is... shaped like a question mark, with a similar symbol.
And pink is tiny, the symbol too small to read.
Maleness. Fusion. Growth. Splitting. Flattening. Femaleness. Mystery. Shrinking.
All these possibilities... and so many different ways to use them! And don't think they have to follow strict rules set by other examples--each represents a single purpose... but contains many possibilities. Three ways to use them, dozens of ways to interpret each one.
And someone unsuspecting is going to have to LEARN how to use them when they set their sights on them, the magic beckoning them to at least try one. Someone like...