I instant capped around 16 npc 10s on server 151.
My method: 2 big waves + 38 10k warrior waves.
It's the cheapest and most cost effective. I probably can do this hundred of times without worry about the troopAnd with warriors so cheap, I can use ANY cities for capping without having to transfer cav around.

And with warriors so cheap, I can use ANY cities for capping without having to transfer cav around.

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