Heres my doll build.
Attune:3/5
Poke:5/5
Swarm:5/5
Heal:3/5
Curse:1/5
Scorch:1/5
Cure:2/5
Grave Shackles:1/5
Life Drain:5/5
Focus:0/0
Spirit Ward:0/0

Here's My Build @ Lv20

Attune:3/5
Poke:5/5
Swarm:1/5
Heal:1/5
Curse:1/5
Scorch:1/5
Cure:1/5
Grave Shackles:1/5
Life Drain:5/5
Focus:0/0
Spirit Ward:1/0

Anyone find the Grave Shackle times yet?
Rank-1 is 5 Seconds
Rank-2 is 6 Seconds
Been askin everyone I know but cant find anyone who's used it past that.

{Edit}
Rank-3 is 7 Seconds
Rank-4 is 8 Seconds
Rank-5 is 10 Seconds

Feel free to correct me if im wrong.
Second hand info...