Talk:Skills/@comment-23.30.237.109-20130917201038/@comment-159.53.46.141-20130917205238

A particular skill can only proc once in battle; if you have more than one Warcry card in your attack deck, it can still only proc once, although each card will have an opportunity for the skill to proc.

IMO, it's better to have a variety of skills, especially those that affect your whole deck, but having say 2 Warcry and 2 Flag Of Victory is definitely a plus.