I think health funnel has some potential as a healer spell so why not have a Re that allow it to be cast on player:

Type: EPIC

Name:
Health transfer (name subject to change if a better is found )

effect:

first part: Health funnel become health transfer and can also be cast on party member (raid member and all kind of pet too) the more healing power the more health is transferred ( you heal more but take more damage).

second part: As health transfer is active 50% of the healing you receive will be transferred to your target instead of you. transferred life doesn’t work with AOE healing spell and is not affected by your healing power as this will be too op.

The balancing of this spell is of course needed, and the number can be tweaked, but you can see the picture.
I think that having a way to have a shadow or warlock type of healer that use his life to heal can be an original new way to play and this is a first RE that can go toward this

@Felgrim Or why not having it do more damage the more proc you have so the rage additional cost can scale, just throwing the idea

@Zentrix Theme is important , but like @WiliemDemon said maybe if we have more CoA RE this could be a good choice.

@WiliemDemon I agree that some spells need more RE and Curses in general are part of it

I think health funnel has some potential as a healer spell so why not have a Re that allow it to be cast on player:

Type: EPIC

Name:
Health transfer (name subject to change if a better is found )

effect:

first part: Health funnel become health transfer and can also be cast on party member (raid member and all kind of pet too) the more healing power the more health is transferred ( you heal more but take more damage).

second part: As health transfer is active 50% of the healing you receive will be transferred to your target instead of you. transferred life doesn’t work with AOE healing spell and is not affected by your healing power as this will be too op.

The balancing of this spell is of course needed, and the number can be tweaked, but you can see the picture.
I think that having a way to have a shadow or warlock type of healer that use his life to heal can be an original new way to play and this is a first RE that can go toward this

@Dedge Simple but can be good in PVP I like it

@Felgrim Or why not having it do more damage the more proc you have so the rage additional cost can scale, just throwing the idea

@WiliemDemon Like the idea to have a rage/mana melee ability with no cooldown but this can be a bit broken with combo point as those RE make it possible to spam 6 combo generators really easy.
example: with hemorrhage and sinister calling you can have a spam able 2 combo ability and finisher with ruthlessness.
So, it can get out of hand as rogue combo point generator is balance around energy consumption.
Maybe limiting it to one or tow rogue ability can be a better choice

@WiliemDemon Didn't know
but still I think therr is more possibility with other shadow DoT as the curse is a slow burn that you don't want to constantly re apply as it damage ramp up will be reset.

@Zentrix first I like the theme of you RE but I think that it is best to replace Curse of Agony with another DoT as you cannot have curse on multiple target .
But with corruption and nightfall, you can for example have free shadow bolt which can be synergic with you theme and maybe have auto shot able to trigger nightfall and replace chimera shot with shadow bolt as chimera is more nature than shadow.

@Summer find a mystic altar and it will unlock the tab forever on you hero