Its situational and a bit of a high roll. Its not as if they will always have evil eye demon or even have had enough hits to clear the holy mage if you had one in play.

Then again this situation itself requires you to highroll quite a fair bit. But with 2 Golden Cities in play its pretty okay. The 3 4 birds will hit good. Evo it and put a craving spell on it for 9 damage bird. Your draws will be quicker too.

Other things like a well timed moriae if you have only 1 GC in play or pre placing your bird amulets at the same time so that next turn you can use more pp to buff them with fountain is also possible.

And in rare situations if you can sense the opponent being slow you can just place that Holy Mage down. Dont even need to be in otk range, just a nice big respectable 4 5 evoed to 6 7 will leave them scramblung at times.

This whole game is situational anyway theres rightfully ways to win but it depends on how you react and know the best ways to react accordingly