School: Chronomancy (Transmutation)
(Intended for use with the Chronomancer subclass)
Range: 1 year into the past / level
This spell changes an important event in the caster's past. This is just like Create Paradox, but the event can be as far back as one year past. Such an event could be changing from a Historian to a Seer, acquiring a proficiency in Prophecy rather than Alchemy, or deciding to research a new spell rather than create a new magical item, to name a few examples. The event must be one the caster had adequate control of at the time, and something should always be given up for whatever is gained. The change should always be evident, but not necessarily work out the way the caster/player expects. The DM should also feel free to remove any items or relationships he feels would not have been found as a result of the caster's meddling, and add any items or relationships that now would have been instead, for better and for worse. After all, the things that are changed were likely important to the caster at one time. The turbulence caused by casting Create Major Paradox has a 50% chance of attracting a Time Demielemental or a Chronomancer guardian from the demiplane of time.
Based on the 2e AD&D spell Major Paradox, from the Chronomancer suppliment (TSR 9506).
A full list of 50+ Chronomancy spells, plus related monsters, items, backgrounds, etc, can be found in the comments of my Chronomancer (Wizard) subclass here.
https://www.dndbeyond.com/subclasses/6582-chronomancer
Chronomancer, Version 2 - [https://www.dndbeyond.com/subclasses/522102-chronomancer]