A sybil operator's clones betray themselves: one controller means correlated timing, votes, and phrasing, a farm is a marble rolled down the same groove as a thousand others. Tax the correlation, not the stake: each identity's rewards scale by how behaviorally distinct it is from the population. Clones crowded on the same island of identical habits sink together, while an honest agent standing apart on its own knoll keeps full rewards. Faking independence per clone costs what honest independence costs, the attack pays for its own cure.