Roach & Knickers
Both are basically free points, all you need to do is keep them in your deck. If you use leader abilities that can manipulate your hand like Pincer Maneuver and Tactical Decision, they can be used to shuffle both of them from your hand back into your deck should you happen to get them from transformations.
Avoid cards that target bronze cards in a players hand or on the board like Queen Adalia or Duchess’s Informant, as actually playing a bronze card instead of waiting for it to transform into a more powerful gold card will not happen very often and you risk bricking those cards.
Do not even bother. Every hand buff will be lost when the card transforms. Should you use Pincer Maneuver make sure you play the boosted card you just drew from your deck at once so you do not waste the extra points. Allgod’s effect is pointless as well unless you use it on cards like Roach or Knickers which you do not play from your hand.
This strategy is worth a consideration so you can play Shupe’s Day Off and Radeyah should you get them. The weakness of those decks – running many different bronze cards instead of more synergistic ones – does not exist in this seasonal mode after all.
I highly recommend you do not run a heavily polarised deck. If you have plenty of high provision cost cards and need to run many low provision cards to fit them into your deck, you are artificially limiting yourself as you cannot abuse the flexibility granted by the rule set of this seasonal mode. More on that below.
You want many differently-costed cards in your deck and hand so you can maintain a constant output of high provision gold cards. Similar to the concept of Thrive, try to play cards with decreasing provision cost starting with expensive cards while you wait for your low provision cards to ‘grow’ into better ones.
Try to keep at least one of your highest provision cards in your deck in case you get a tutor so you can make use of impactful gold cards you chose instead of being at the mercy of coincidence. Oneiromancy is not too unlikely to get at 13 provisions after all.
Do not fall into the trap of believing high provisions always mean a better card. Especially in the very high provision regions of 14/15 you usually get Scenarios of different factions which only give you the value of their first chapter due to a lack of synergies in most of the cases. Do not overestimate their value. Even if you can get lucky and use a tutor to pull a unit from your deck to advance to their next chapter, this is more of an exception than a rule. Should you play a Nilfgaard deck it is highly recommend to run at least some Aristocrats which you might be able to pull from your deck. Unlike all the other factions, Masquerade Ball at 15 provisions is guaranteed so you can hope that the stars align and trigger several of them with one tutored Aristocrat.
Cards to be mindful of
As just mentioned tutors are especially relevant when it comes to advancing Scenarios or accessing cards from your starting deck for a change. Just be careful as you might get specialised tutors from other factions which can end up as nothing but bricks.
Usually a valid pick, as Purify on demand does not exist. If you force your opponents to target Defenders it can make some of their plays extremely awkward.
Just like in plenty of the seasonal modes, you can exploit this mechanic once again. Do try to get cards with this keyword. It is triggered by every card you play as none of them was start of your starting deck.
Think outside the box and try to get cross faction synergies which are usually impossible to achieve in a regular match.
Echo cards/evolving cards
Because of the seasonal rules both work different than you are used to: You will never play an Echo card a second time from hand as it will get transformed at once when you draw it again.
Because of this transformation evolving cards will always be in their first form as it appears in the deck builder.
At the end of the day the outcome matches in this seasonal mode relies heavily on RNG. So despite all the pointers presented above, RNG will favour either you or your opponent. This mode is meant to embrace the hilarious randomness with every card you play. If that is not your favourite brand, better wait for the next seasonal mode. Otherwise, have fun while it lasts!