Regarding Izzet-color decks, which currently dominate the Alchemy meta:
Many aggro decks lose without being able to counter them, and the decks’ tendency to play multiple spells in a single turn noticeably slows down the game’s tempo.

In particular, the Izzet-colored deck relies on copying with <<Inspiring Easel>>, the 2-mana 3-point damage spell <<consumed by History>>, and combo initiation via <<summitfest Closing Ceremony>>.

These elements create synergy at an extremely high level, effectively shutting down most aggro decks.

If Standard cards were allowed, you could counter this with exiling cards to the graveyard using <<Rest in Peace>> or locking the opponent to one spell per turn with <<High Noon>>, but those options aren’t available.

Additionally, Izzet decks featuring <<Vivi Ornitier>> are extremely powerful; by untapping, they can cast multiple spells in a single turn to finish off the opponent. (Since it can be activated as many times as desired by tapping, it’s even more powerful than before the balance adjustments.)

Its synergy with <<Stormchaser's Talent>> is also formidable; opponents are often forced to dedicate two cards just to counter a single copy of this card, making it extremely difficult to deal with in the current Alchemy card pool. (In the Standard card pool, cards like <<Pest Control>> could be used to counter it, but Alchemy lacks such options.)

Overall, the current Izzet color combination significantly distorts the Alchemy meta, and I feel its deck power is exceptionally strong in an environment where countermeasures are unavailable.

Please implement a rebalance of these cards as soon as possible.