Mark of the Martyred

It is called the Firebreak Calculus: how much good could I do if I find the right place and fight until I die?
Type: 
Titan Mark
Rarity: 
Legendary
Light Level: 
400
Activity: 
Archon's Forge (Plaguelands, Earth) public event

https://www.bungie.net/en/Armory/Detail?type=item&item=3535605654&itemna...