I'm trying to [make a custom card](https://boardgames.meta.stackexchange.com/questions/1546/are-well-defined-theoretical-or-custom-magic-questions-on-topic). It's a creature with soulbond. I would like it to be able to tap to change what it's paired with. I was thinking:

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> {T}: Unpair this creature, then you may pair it with another unpaired creature you control.
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Is this the correct formatting? Is there a better way to do it? Does this idea even work within the rules?