The Lord of Cinder mode acts in a similar way to how the Humanity mechanic was implemented in previous games. To enter this mode, the player must first obtain and consume an Ember or defeat an area boss.
The player's HP will be increased to 130% of its base value and they will become a Host of Embers. While in an area that has an active boss, many online features become active. The player may summon white phantoms, however they are also subject to invasion by dark spirits.
- The player will automatically enter Lord of Cinder mode upon defeating an area boss, if they did not have an active Ember prior.
- When entering another player's world via white sign, red eye invasion or covenant summon, the player's health is temporarily adjusted to its base value. When summoned to another world via red sign, however, boosted health is retained.