Veteran Cossack

When casting this card, pay {x} for every Cossack
you control. {x} is equal to the number of +1/+1 counters placed on each Cossack you control, as
well as the power of Veteran Cossack.
{2} Put two -1/-0 counters on each Cossack you
control. Cossacks you control cannot be blocked