Ley
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In response to the curse on cavalry/champions, you can cast a blessing.
But it's unlikely you'll be able to bless black knights. And their morale is unlikely to work, unlike champions.
Well, it depends on how you look at it... - but at least their morale will never break :)
"Единственное, что можно сказать с уверенностью об удаче - она изменит..."