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Guys, even the updated Fakes are the weakest units in the game. They have only one use: to block enemy archers for a few turns or to chase a slow zombie around the battlefield, exposing it to archers and ballistas.
As for Phoenixes, I haven't seen more bot-like creatures. They are only twice as strong as Thunderbirds, but their growth is 6, which is higher, and they are much cheaper. By the time four Phoenixes are left in the Conflux castle, there are already more than twenty Thunderbirds in the Citadel castle. Do you think 20 Thunderbirds will lose even one bird in their first turn against four Phoenixes? :) And what if they also deal lightning damage for free? =)
And you still have to survive until the Grail and the University!
But honestly, you're exaggerating about the one-to-two ratio, chasing zombies around the map, and blocking archers. By the eighth day, there can be five birds, against nine (maximum) Thunderbirds.
Added 1 minute ago
The presence of cheating heroes!
Of course, you can win, but if heroes from other castles are banned, why not ban the Conflux too!?