But the rules says that we are penalized only with cards, not with a change in the game result....
7.1. PENALTIES
Penalties are issued when a team somehow breaks the rules or disrupts the event, either knowingly or by mistake. When a team gets a penalty, they have to, at the end of the round, remove a number of cards from their Vault. They can remove any cards they have in the Vault at that time, including the once they salvaged during that round.
Minor penalty 6 cards Small and harmless things like posting an illegal deck by mistake.