I think the version I had gave it "Whenever a creature dealt damage by this creature this turn dies, this creature fights another target creature." until end of turn, then had it fight another target creature, or something like that. Stick a 'may' on there and it should work. My card was rare though since there are some shenanigans you can get into.
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Just killing time until the world ends.

Magic: the Gathering Topic - oh god

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