what happens if you announce an illegal action?/play an illegal card?

114. Procedural Error - MisrepresentationDefinition:A player is considered to have committed this infraction when he or she unintentionally misplayed a card or a game rule.Example:(A) A player attempts to play Dread Gaze on a referendum that one of his vampires called.(B) A player attempts to play Frenzy during his own turn.(C) A player plays Art Museum when she doesn't have any ready Toreador.Philosophy:This penalty assumes an unintentional action on behalf of the player. If the judge believes the misrepresentation was intentional, see section 160 - Cheating.Penalty:Caution.

&20. Definition of PenaltiesCaution: This is the smallest penalty that can be given. A caution is a verbal warning to a player. The caution must explain the infraction and the consequences if the infraction is repeated. A caution should be reported to the head judge, but does not need to be tracked on paper.
...40. Repeat OffensesThe recommended penalty for the first offense is listed in the "Penalty" portion of each infraction. For the second offense of the same infraction, the next highest penalty is recommended. Note that this increase of penalty follows the order of:Caution -> Warning -> Game Loss -> DisqualificationIf a baseline penalty is a warning, the second offense should receive a game loss, and the third offense should receive a Disqualification. For example, a player's penalty for the first offense of Card Drawing—Looking at Extra Cards would be a caution. The player's penalty for a second offense would be the next highest, which is a warning. His or her third offense would result in a game loss, and fourth offense would result in the player's disqualification. Disqualifications that are the result of accumulated infractions are not disqualifications without prize. At the judge's discretion, a level of penalty may be repeated before before escalating to the next level. For example, an inexperienced player has a habit of holding his cards below the table. After receiving a caution from the judge, the player later repeats the infraction. The judge may choose to issue an additional caution rather than escalating to a warning.

200. Correction of Game StateThis section generally deals with returning the game to a fair and playable state after certain types of infractions. Only the judge may make corrections to the game state. Correction of the game state is done in addition to and not instead of the application of the appropriate penalty for the infraction.Philosophy:It is important that the player committing the infraction receive no benefit in the game for doing so. If no significant game actions have taken place, play should be backed-up to the point of the error. The error should then be corrected and the game should proceed forward from that point. If significant game actions have taken place (such as having too many cards played and/or replaced), the judge may choose to leave the game undisturbed or may adjust the game state in some other way (for instance, altering pool or blood levels) since players have made play decisions based on the subsequent state of the game.Examples:(A) During his master phase, a player realizes he did not make the decision to pay for a contested card.;Resolution: In this case, very little has transpired since the error was made. The player backs up to his untap phase, chooses to pay or give up the contest, then continues his turn. Once the turn continues he may choose to make the same or different plays continuing forward from this point.(B) At the end of a lengthy turn involving several complex combats, a player realizes he did not make the decision to pay for a contested card.;Resolution: In this case, too much has transpired since the error and it would not be possible to rewind play to that point. In this instance, the judge decides to have the player immediately make his choice of whether or not to pay for the contested card, and then have play continue from the point where the error was realized.(C) Several turns after the occurrence, the players realize that a player had a vampire burned in combat from a strike card that the other player could not have legally played.Resolution: In this instance, too much has transpired and no easy way to rewind play presents itself. The judge returns the burned vampire from the affected player's ash heap to the ready region with 1 blood. The affected player would have had the vampire during his prior two turns so the judge puts two blood on the vampire to simulate the gain from two successful hunt actions. Play resumes from the point where the players realized the error.