.. when Santaleous uses his special ability to cancel a master card, the cost for the card has to be paid even though it was canceled? The card text of Santaleous omits the phrase “no cost is paid”, therefore when you’re playing a Zillah’s Valley, for example, the card is canceled and you have to the pay 5 pool. Even worse, when Santaleous is bleeding you for seven, and you’re playing an Archon Investigation, he can just cancel the Archon Investigation and you’re being bled for seven plus the three pool you have to pay for the Archon Investigation. Also note, that Santaleous’ card text has no restriction on how many times he can do this in a turn. So as long has he has blood, he can cancel master cards repeatedly in a given turn.