I'm sure this has come up a billion times already, but can we please get a nerf for her? My equivalent card for Nilfgaard: Tibor Eggebracht, reaches 32 power when synergized properly with Imperial Golems and Roach, but comes at the cost of card advantage. The sacrifice required for Nova is next to nothing, particularly when it comes to Scoia'tael swap decks, which is where she pops up most in my experience. Compare this to the silver spies, which require you to give your opponent 13 power to generate card advantage, and Tibor's max power is effectively only 19, which is about right for most golds, which should come out to around 15 power. On his own, his power would just be 12.
"My equivalent card for Nilfgaard: Tibor Eggebracht, reaches 32 power when synergized properly with Imperial Golems and Roach, but comes at the cost of card advantage." - Tibor is not comparable to Ciri: Nova. Tibor has built-in card disadvantage; Nova does not. Adding Impera Golem and Roach makes the comparison even less fair. Imagine if I said Tibor is actually worth 38 points because in addition to Impera Golem and Roach, I also have 3x Mangonel.
"The sacrifice required for Nova is next to nothing, particularly when it comes to Scoia'tael swap decks" - if these decks weren't running Ciri: Nova, they would have 3x Half-elf Hunter and 3x Vrihedd Vanguard. 3x Vrihedd Officer is also a possibility. So I completely disagree with you that the sacrifice required is "next to nothing".
"Compare this to the silver spies, which require you to give your opponent 13 power to generate card advantage" - don't see the relation. Nova used to have a problem where if you got the red coin + opponent played anything less than 12 power to start, you could spy them and if they didn't have spy, you win on even. That obviously is less easy to accomplish now.
"Tibor's max power is effectively only 19, which is about right for most golds, which should come out to around 15 power" - 15-power golds are completely unplayable. Nobody plays vanilla Geralt, vanilla Triss, etc. Where they aren't used as enablers (e.g. Leo Bonhart in NG Handbuff), they will almost always be worth more. Check the average points of golds such as Coral, Schirru, Triss: Telekinesis, Kayran, etc.
I remain unconvinced that Ciri: Nova needs a nerf. If anything, she's like a new-player magnet since some people got the memo that "Ciri: Nova is OP!!!" and are playing her in decks that completely should not be playing her. Go figure.