Every player killed earns you one tail, up to nine. The more you
gather, the faster you are: Speed I at three tails, Speed II
at six.
At the ninth, the transformation fires on its own. For
25 seconds you gain Speed II, Strength I and +35 % damage, and
the whole server is told. It is the only kit that publicly announces
it has become dangerous.
The price is simple: dying loses you everything. Nine kills
without a single death is a goal for a session, not for a fight.