Revival is a term used to determine resurrection and revive a dead Envoy. For example, if a character's HP falls zero, the character will be dead and needs to be revived in order to perform actions again.
There are two choices between reviving: Local revival or just revival. When local reviving, the player will be restored to full health and will be spawned near the exit of the dungeon or near the Traveling Priest. Whe reviving, the player have to wait 60 seconds in order to revive and will be revived where the player died. However, the player will be revived with only 10% of their HP.
Players can also use an revival item, such as Feather of Revivals to revive on the spot with full health. Keep in note that such revival items does not work in instances like Sky Tower.
The Gaia Revival Skill allows the player to revive other players on the spot without waiting 60 seconds. However, the skill has a casting time and leaves the caster vulnerable. The player can find it under Skills (K) with the icon in yellow with a circle in the middle like a lightning bolt.