Hearthstone's new card design is often conservative. Even those cards that look very strong in the preview season are rare in real combat. In most cases, for a mature deck, the new version of the card can indeed become very strong after adding the build, but in most cases, the strength is also limited.
First, the new card is online, and the old card is unlucky
Not to mention that historically, there are really many card decks, one without changing the use of three versions. Of course, this situation is a minority, but many times, the new card is slightly "radical" in design, then there are old cards to be unlucky. This is a new card of a shaman, and the legend is that the entourage of Isara Shine. 3/3/4, Fire Spell Damage +2, Natural Spell Mana cost reduced by 1 point, and after you release a Frost spell, you gain 3 armor.
When Blizzard classified the spells, Gu Ying said that in a short period of time, this matter did not have much impact, but after a long time, the operable space was large. For example, this card would not have been designed this way if it had not been classified with spells. But if you want to ask whether this card is strong or not? Then I can only say that the strength of this card depends on the actual battle to know.
However, if you are a seasoned shaman player, you will definitely think of unstable mutations at the first time. Evolve a minion for one fee, which can be reused this round. This is a natural spell that, combined with this orange card, can be reduced to zero fees and then evolve indefinitely. Unfortunately, the designer erased this possibility before the new card was actually launched.
Because the designer said that the description of unstable changes should be changed to "echo". Here Gu Ying told everyone a cold knowledge that "the echo cannot be reduced to less than one fee". This means spells/minions with reverberating tags, which are normally a minimum fee.
Obviously, the unstable changes after the modification, even if they are lucky enough to meet the wizard apprentices and light elements in the future, there is no such as the imaginary zero fee infinite evolution. Oh yes, the Wizard Apprentice was weakened by the designer to four fees, and only the Light Element was left.
This is not the first time that the old card has been weakened by the new card
Blasphemy, this is a warlock's solution card, in a sense, in the face of complex scenes, and a large number of dead words, this is the strongest solution card in the whole hearthstone. But because the calculation is too complicated, not everyone can use it well. Of course, strictly speaking, it is not that the calculation process is complicated, but that the health of several followers is calculated in the time of one turn, which is more complicated.
And players who have experienced this know that because of the blasphemy, the designer weakened an epic retinue called the Fear War Horse. Its initial effect was to summon a fearful warhorse, but in doing so, it omitted the complex calculation of blasphemy. It was weakened to be re-summoned only at the end of the turn. Although it only added a few more words, it also lowered its already low intensity to another level.
All in all, the new card is online, and the unfortunate is always the old card, which is not the first time it has happened, and it is foreseeable that such a story will continue to play out. Is it the lack of ability of the designer, or is it the inevitable result of the game's long-term operation? I really don't know. But consider hearthstone is also eight years old, it should be the latter, right?