$begingroup$ To compare your magic system with other magic systems, I tried recreating traditional spells with it: $begingroup$ @Separatrix: All thermal engines Focus on the principle that a single end is hotter. But, you see, the Stirling engine needs a very hot source and a cold resource. We also use https://realmagicspellscourse15654.bloggerswise.com/47526326/the-greatest-guide-to-real-magic-spells-manual