Is the slave mule fit for a tournament?

Mistress Roxana tests her slave mule's competitiveness. Her human pony looks very unathletic, so she has no choice but to test it extensively and find out how long it can carry her. The key question is: Does the slave's constitution even allow him to participate in a competition where there will also be jumps? Mistress Roxana will find it out right now!

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