Disc talent idea - thoughts?

[Ledzee]

Make grace baseline, replace with:

Dark convocation:

[Channeled, arbitrarily long duration]
Draws on the spirits of target atoning player and their two nearest atoning allies to heal the target for a large amount whilst causing atonement of the affected players to drain at an accelerated rate (say, 4x).

This is a high throughput single target heal that will channel until there are fewer than 3 atonements left, or atonement on the target runs out.

Thoughts?