After reviving another player, grant them a Radiant Prism that blocks incoming damage for 5 seconds. The first time you take lethal damage, gain a Radiant Prism that blocks incoming damage for 10 seconds. While active, reviving another player fully restores both players but removes the Prism even at full danger.
Prismatic Grace is a craftable helm. It is a Tier 4 armour crafted from Rezakirireagents, and is one of the currently unobtainable Exotics.
After reviving another player, grant them a Radiant Prism that blocks incoming damage for 5 seconds. The first time you take lethal damage, gain a Radiant Prism that blocks incoming damage for 10 seconds. While active, reviving another player fully restores both players but removes the Prism even at full danger.
This exotic helmet is good in either a 'support medic' set or when you're trying to learn how a monster behaves.
Be careful when using this with the perk Nine Lives. The unique effect won't proc on your first death due to Nine Lives having priority. Nine Lives also stops you from going into an actual 'downed' state.