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My point was that multiple copies of cards is an easily broken mechanism especially when applied to engines or cards that generate above average points per turn. Your examples reinforce this observation.
Yes, and my main point was spamming has been a Gwent issue forever, but somehow no one is fixing reavers and warlords, and I stopped expecting them to, but because Equinox - even though it's a neutral card - is most usable by ST, I expect it to be murdered in less than a month.
Incidently, ST can more than "somewhat" span Equinox -- it gets two natural copies from original deck, a third from Triss: Telekinesis, two restored to the deck by Alissa, and one played from graveyard by Forest Protector. Incidentally, none of these six copies is at all interactive -- without graveyard hate the opponent has no control on them. Most ST decks can very naturally generate 2 more copies from Elven Seers -- copies that are very binary depending upon the control available to the opponent. And that does not include meme copies based upon copying or replaying the Seers and Alissa (a potential of potentially at least 7 more copies -- although admittedly copies that are unlikely to actually materialize).
No, that's actually exactly what I call "somewhat" spamming. 2 natural cards, one replay from the graveyard with an 11p card, two low percentage possibilities from the seers. 11p Triss is not consistent with 4 bronzes in play from your side alone, and who knows how many from the opponent, so also VERY "somewhat." Alissa has to return them from the graveyard, all of which adds up to 6 or 7 copies only "sometimes." More often it's just 4.
Now, compare this to NR spamming reavers, or MO spamming golds. Have you EVER seen fewer than a dozen reavers in match, unless it took less to wipe you out, that is? 8 reavers on a row, a dozen royal guards, 3 MO defenders, 2 Kellis, 3 Gernis, 2 Koscheys or Queens, 2 sets of each: Melusine (or 3), Sigvald and Knut via returns from graveyard, 5 bomb heavers. THAT's what I personally call "spamming."
So to me, what ST does outside of tokens is only "somewhat" spamming. There are no equivalents of cheap garbage spam cards like megascope and teleportation for specials, and one ST special "duplicator" is a 10p gold and has a timer, which make her also only "somewhat" capable of being played. And I'm saying this as someone who has spent a lot of time with spell elves decks whose wincon is quad harvest or quad backup plan, depending on the draw.
A second significant issue with mechanisms around the card is more subtle -- it is high tempo without any significant play restrictions. As long as there is a unit on the board, Equanox is good for 12 points (plus leader value plus value from cards like Triss that might play it): it does not need preparation, it does not depend upon board state, or it does not need a particular time in the match. This extremely flexible reach/tempo eliminates almost strategic answers to to the card or deck. Again, other cards may have the same issue -- I am simply trying to identify precise mechanisms around Equinox that I believe make the card exceptionally oppressive.
The thing about this is that no one is going to play equinox "without restrictions," even though they can. Especially if you don't land Triss, but even if you do. You will always try to play it into a seer, because otherwise you're risking graveyard hate and your win con is going bye bye.
Basically, it's oppressive because of the same reasons all the other swing plays are oppressive. It swings for too many points at the end of the match. But's it's going to go away after one season, while all the other crazy shit that's been around for months will still be around months later.