The phrase "art necessitated" can be substituted with a variety of synonyms depending on the context. For instance, you could use the word "demanded" instead of necessitated. Alternatively, you could opt for "compelled" or "required" to convey a similar meaning. If you want to emphasize the creativity required for a task, you could use "innovated" or "improvised." Additionally, "created" or "made" could be used to broaden the scope of meaning slightly. Ultimately, the choice of synonym will depend on the intended emphasis and context of the sentence. Regardless of which word you choose, it is clear that art is a demanding and essential practice that requires a specific set of skills and expertise.