Crazy event.
Teams fielding only one or two decks can make full use of the third card and charge with fully upped monos (Generals can use THIRTY SIX upgrades!
), teams whose Vault sucks and is terribly predictable, or who can't afford to field monos, can turn around the table using the first card to gain unpredictability.
Of course, Time, Earth and Entropy will have a far harder time against their opponents this round. But I fully expect Entroponies and Earthlings to gain some dirty tricks with the first one - fielding so many decks doesn't work well with the second and third one, so they'll likely choose to convert the hell to graboids / earthquakes / novas / discords. So much for slowly grinding away their Vault...
This will be an excellent round. To watch, of course: Life would have gained practically nothing from these events - maybe some adrenastaves to resurrect the Monks...
Besides, how would it work for Underworld? If it was still here, I mean...