History

1) all the magic and the D&D stuff happened in the real world long ago
2) something happened in the planes that sealed off the Material Plane
3) without magic, we developed technology as we have in real history
4) the planes get opened back up, and all the other planes see how we’ve vastly surpassed them in technology
5) the other planes begin technological development, with the center of culture and resources becoming the Material Plane
6) Judgement Day; heaven and hell invade the Material Plane to settle their long war
7) humans are caught in the crossfire and eventually fight back, building a ‘Planebuster’ bomb
8) the upper and lower planes are destroyed, snuffing out divine magic
9) with half the planes destroyed and the Material Plane in a constant state of war, Sigil once again becomes the center of trade and development
10) lacking the resources and innovation that came from the Material Plane, the game is about surviving in the high-tech city of Sigil and the Wild West-like surrounding planes

Rasmus Croen and Mechromancy

The modern history of the planes can be said to have begun with Professor Rasmus Croen and the invention of Mechromancy. It had long been known that magic is a fungible energy source; that is, that the basic energy used in shaping one spell is no different than the energy used to shape any other, even if their effects are remarkably different. This principle allowed for multiple spellcasters to contribute energy to the shaping of a single spell. Under traditional theurgy, this was done almost exclusively in religious rituals or in the casting of high-energy epic spells. Professor Croen, however, applied that process to small-scale spellcasting, reducing low-energy spells to dozens micro-theuric interactions. Since it is similarly well-known that cost of creating a spell-trigger item grows exponentially the greater the energy demand it requires, it was likewise found that micro-theuric energy demands were extremely inexpensive to bind to trigger items. Furthermore, since the magical energy is fungible, the trigger items did not even need to have the magical energy enchanted into them. So long as they were given the imprint of the spell, external energy could then be cast through them to form the micro-theurgic spell result. Thus, a single low-level trigger could set of dozens or even hundreds of effects. The practical purpose of this is that cheap and mass produced summoned goods, from weapons to vehicles to everyday items, have become widely available.

History

Brave New World NickJames____