Casting adverbs are provided in this article. The words listed here are commonly found along with the verb casting in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb CASTING.
constantly
continually
merely
occasionally
simply
Hope this word list had the casting adverb you were looking for. In addition to adverbs used with casting, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.