Ability points are used to improve the Hero Stats of your Heroes. You earn ability points by fighting: - Each hero earns 1 AP for each enemy hero defeated (including defending, even while you are offline). - When attacking you will receive a guaranteed 2 AP points to each of your equipped heroes. Ability points are reset at the end of the season.
Attacking heroes can receive up to 5 AP points each: Up to 3 for killing enemy heroes + 2 AP guaranteed for being the attacker.