Mark Antony is a Caesar kingdom prestige hero and requires 70,000 prestige to unlock.
Unit Type - Lancers: High Critical Strike Chance. Gambit - Malicious Ploy: Deal gambit damage to a single target and heal up to the amount of damage dealt.
Mark Antony is a decent hero, he's most useful when the enemy has low gambit defense as he'll keep himself healed pretty well while doing good damage. His gambit is only single target in the end making him an obsolete hero once you get higher levels of prestige and unlock heroes like Nero.