I think that mostly relying on PBE to test stuff is a flawed idea. PBE should be a place for players to get a feel for general experience for new changes, not the platform for them to do bug catching.
I mean, if they catch stuff, sure it's great, but I wouldn't rely on players too much when there are maybe a dozen or so actually using test server and none of these are really too incentivized to go break things to extreme.
Personally, I'd make a record of a hundred or so games and check each time that each turn and each outcome doesn't change with the new patch. I am not a pro tester but this does look like the 'go to' idea I'd employ. If a hundred is not enough go for more or better recorded matches, but tje general idea should help.
It should also be of note that cards bugged in this patch are also one of the more utilized cards in actual matches. Storm and footman for example are both widely used and have a range of potentially buggy interactions. So having a couple of interesting games recorded for these alone wouldn't hurt.
P.S. I have to emphasize something here: oppression was actively designed and tested by the council and it was _still_
broken as puffy when it came out. That's how flawed the idea of relying on test servers is.
P.P.S. If the patch is considerably more buggy than the previous version : roll it back
The current swathe of players that are still in the game is a unique case of ppl that are ready to tolerate testing version of patches for the devs to fix things faster, but when a game is in such a bugged state it actively discourages any new players to take interest. And I think I will just stop playing entirely until the issues that came up are addressed. They are too numerous and too important interactions, that I don't want to guess what works and what not in each game.
Back when we were engaged we spent collectively between 40 and 80 hours each week breaking the crap out of things on the test serve
I think I already mentioned it, bit it is a work for dedicated testers
, not volunteers. Healthy game development process should not push this responsibility to ppl that aren't even paid.