Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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you shall not ( or attempt to ) purchase , sell , rent or give away your account , create an account using a false identity or information , or on behalf of someone other than yourself ; you shall not use the service if you have previously been removed by supercell , or previously been banned from playing any supercell game . 

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. OPTIONS: ["Content removal", "Contract by using", "Unilateral termination", "Arbitration", "None", "Jurisdiction", "Limitation of liability", "Choice of law", "Unilateral change"].