Life Buildings

but that doesn't make up for it... there's only one attack, the first one, and that's it! And in terms of defense, attack, damage, and health, they lose to angels...
But you can't always mine 50 units of ore!

Often, ore is easier to mine than other resources... not always, but more often...
And 4 knights are roughly equal in strength to 2 angels; they don't resurrect, of course, but the first strike is also good...