[@Aragorn]
A user of fire would benefit greatly from the presence of fire. However, they are not reliant on it. As long as there is a fuel source (ex: someone's face), and oxygen, Fire can erupt. Also, Existence users don't always have a medium to work through, so they just straight up use their own inner Wells of Aeon to achieve tasks. This is different from Creation, because an Existence user needs to fuel their use of their Aspect with Aeon as long as the Aspect is being used. Creation users do not have such a problem, but are actually very limited until they break the barrier of "concepts"