Thanks Chuck! Sorry I missed that. I searched for "traits" and a few similar terms but not "special abilities".
So that means Leonidas's "Born Leader" ability is just a boosted version of the basic "leader" ability, in that he can use it at range 1 and it boosts their attack and defense.
I assume you still have to discard the troop activation card with Born Leader, right?
Correct, you discard the activation card.