Despite being illegal some teams actually hire referees. While they obviously cannot act too suspicious they often can decide matches just by standing in the way.

A Bribed Ref may not block and may not be blocked.
Exceptions are accidental blocks via Ball&Chain movement. It is also allowed to use Bombs, Chain Pushes, Secret Weapon Stabs, Wizard Spells or induced card effects against a Bribed Ref.

A Bribed Ref standing on the LOS during a Kick Off is temporary not immune from physical interaction and may be blocked or blocked without legal consequences. This status lasts only for the first turns of the receiving and kicking team.

A Bribed Ref may foul, but has add -1 per caught foul on their mandatory Licence Roll after each match.
A Bribed Ref may be fouled, but caught players face a Referee Tribunal after the match facing a potential ban.

Referee Licence Roll, mandatory after each match

1: The league confiscates the Ref's license and the player retires.
2-5: Nothing unusual happens.
6: Bribed Ref gains Sneaky Git for one match.