Each creature has a number of power wisps that depends on their “level”, averaging around 10 wisps per “level”. When a creature can’t house its current number of wisps, it often goes through a form change (I.E. Hoplash turning into Knifrog), becoming stronger, and usually bigger. A power wisp is unique to its producer, and can theoretically be used to identify a creature, like dna, but that’s not really been explored in-universe. Anyway, this is a log, so:
TL:DR
Number of wisps changes, and they can induce form changes. Wisps are unique to any creature, and also can be extracted.
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