This wildcard adds a list of basic adverbs (words that modify a verb) to provide additional variations for prompts. These are intended to be used with prompts describing emotions or facial expressions, but they should work on any verb. All of these adverbs end in "ly," so expect "passionately" or "angily" results as you write your prompts. I'm not sure how much of an impact adverbs have on image generation, but it does seem to change the results in a meaningful way.
Please enjoy!