[46] Vivi's mana producing ability is kept in check by being a three-mana 0-power creature, something bypassed when the Cauldron grants it to other creatures
If youve been heavy on the low-level, easy-to-kill creatures, that could be catastrophic for whomever youre against
For the longest time, black had difficulty dealing with enchantments, but there's been a deliberate push to expand black's removal to destroy artifacts, at least in a way that's still below white and green in terms of effectiveness
This is a 'Themed Booster', however, and not a full expansion
Nothing is certain, of course, but Vivis Commander playability is likely enough to hold it at the current $30 mark
Master of Cruelties will always see play somewhere in some janky deck, and its lack of a downshift means it should maintain its price tag