How about making it act like a smoke ring? (I don't know whether to make it destructible or not) Butterflies are wicked creatures after all. If it's possible, you could make it also follow you around for a few tiles. We already have enough enemies that don't have anything special other than appearance.
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so we will shut our mouth when
we are trying to be bastards
and speak loudly when we see injustice
because everybody plays the game this way
saints especially
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