Going to be honest and ask if this is even an intended feature. The Warlords shield counter intantly drains all stamina. thus giving the warlord the pure advantage in fight leaving opponents to be batterd away at with a inability to counter or fight back. Warlords Shield Counter needs to drain less stamina.
Also a suggestion for Blocking attacks. Blocking attacks needs to cost stamina within the game. if you successfully block you use your stamina just as if you would attack this will counter balance shield charachters