It isn’t possible at all. All it does is have potential value that her ultimate charge is balanced around, making Mercy a complete trashcan all over again.
Plus, even if you do get that 5 man off because the enemy team turned their monitors off, you die anyway because of no invuln and your team just feeds without their Mercy.
All you’ve done is make using 5 man Resurrect worse than just wiping, especially considering the extremely high chance that you’ll die and lose your ultimate all together.
And again, 4385 is not Master.