New 7/7/7 rules

A Rules Team Ruling has been announced today. They take effect seventh of August which means that they are NOT valid for the EC.
The Thursday and later tournaments during the V:TES in the Sun week are affected though.

Below the announcement as written by LSJ:

ERRATA

Putrefaction: replace "He or she may burn this card instead of untapping" with "He or she does not untap as normal. Burn this card during untap phase."

RULINGS

Cards allies play as vampires treat them as vampires for duration effects (but not effects from the card-in-play).

All cost-affecting cards operate no matter how the card is played ("as normal" or otherwise). All multiplication and division is handled first, followed by addition and subtraction.
Note that pay nothing still means pay nothing, even if something else would add to the cost. So costs for cards canceled by Sudden Reversal or Direct Intervention are still not paid, for example. And Bauble and Horrid Reality still gets weapons for free. And similar for Helena and Dragos.

Similarly, cards that can be used to pay some of the cost of other cards can be used whenever such a cost is being paid (regardless of whether the card is played "as normal" or not).

The card on Echo of Harmonies is not in play, even though it is face up. (This would be interesting only if the card was unique (none so far) or if it is a Boon and Blood Trade is in play).

Rötschreck can be played on a vampire who is immune to Frenzy cards (uselessly, since the target is immune to it).