Board Thread:Questions and Answers/@comment-25896760-20141219234131/@comment-3149389-20141220000754

your leader will be in both teams (attack and defense) so you need to be able to fit it in both.

for a card that costs 29 spirit, you need 29 attack spirit to make it fit in, and another 29 spirit in your defense so it can fit in there as well.

since a leader card appears on both teams, it has to fit in both