How about an exotic that brings back self rezz and adds it to the Well of Radiance
Robes of Alpha Lupi:
On pressing super after death the sword plunges on your body and you are rezzed. Teammates that are dead within the well are also instantly rezzed. Teammates that die after the well has been cast are now rezzed faster.
Looks
Make it look like the white robe that the warlock has on in the image when selecting attunement of grace.
Side note: the instant rezz does not consume raid tokens
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Look, A selfish Warlock that wants to cheat gameplay... Sorry, Not Sorry!