Making them in Mod Constructor there is no specific tutorial, but there are old tutorials floating around that might help, and one current tutorial for traits that might help that does feature buffs, so will give you an idea on what you are looking at.
Creator Musings is a Sims 4 modder, poser/animator, and CC creator hangout server with a tutorial/resource directory, help channels, and mod/cc/sims 4 news channels! Twitter | Tumblr | Patreon | My Discord
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