From Dragon Mania Legends (DML) Wiki
Death Mark can be learned by all Legendary Dragons. It is an active offensive skill that inflicts triggering damage for two turns.
The damage inflicted by Death Mark is not affected by Dark Clouds, Stone Shield, Vengeful Sword, Shade of Oneself or Wisdom of the Ancients. It is, however, affected by Element weakness and resistance. Furthermore, it is not triggered by indirect hits from Explosive Results or Hot Coals, Electric Jolt and Solar Flare, or effects from Slow Burn, Poison and Creeping Shadows.
This skill can be used multiple times by one caster, but only the duration is prolonged. However, it is stackable when used by different attackers.
Target takes extra damage when hit by a direct attack over 2 turns
Target takes 45% DAS extra damage when hit by any direct attack and the trained secondary effect occurs:
|Heroic Healing||When the marked enemy is hit, the caster receives 40% DAS HP.|
|Heroic Duel||When the marked enemy hits the caster, the caster retaliates, dealing 80% DAS.|