The phrase "from which" is commonly used to indicate the source or origin of something. However, there are a variety of synonyms that can be used in place of this phrase in order to add variety and interest to your writing. Some alternatives might include "out of which," "wherein," "atop which," "under which," "beside which," "beneath which," "alongside which," "amidst which," and "among which." Each of these phrases has a slightly different connotation and could be used to emphasize different aspects of the situation. Experimenting with different synonyms can help you to find the perfect way to express your ideas and make your writing more engaging.