Templar

The Templar is a Vex Hydra and the first boss of the Vault of Glass raid. The fight runs in phases: defend three confluxes from Vex sacrifices (four Vex reaching one triggers wipe by the Ritual of Negation), destroy summoned Oracles in sequence (missed Oracles mark you for negation, cleansed at a central Light pool), then use the Aegis relic super to break the Templar's shield while destroying detainment bubbles. In the Destiny 2 reprise Oracles spawn sequentially then simultaneously across five rounds. See also Fatebreaker.