re-forming
Meaning
of Re-form
Source: Webster's dictionaryExamples
Elephants are highly emotional. Whatever they are feeling, they let it out immediately, and the histrionics are over and forgotten in a moment, lasting no longer than the cloud formations that are constantly coming apart and re-forming overhead. There is no guile in pachyderms.
No matter how many times Percy killed them and watched them crumble to powder, they just kept re-forming like large evil dust bunnies.