[Rockabye]

--- ROUND 0 ---
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Aletta Ainsworth takes 7 Darkness damage.
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Aletta Ainsworth takes 7 Darkness damage.
Aletta Ainsworth was inflicted with Poison!
Aletta Ainsworth's turn.
--- ROUND 1 ---
Aletta Ainsworth takes 54 Poison damage.
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Aletta Ainsworth takes 7 Darkness damage.
Aletta Ainsworth was inflicted with Poison!
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Aletta Ainsworth takes 7 Darkness damage.
Aletta Ainsworth was inflicted with Poison!
Aletta Ainsworth's turn.
--- ROUND 2 ---
Aletta Ainsworth takes 54 Poison damage.
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Devotion! Aletta Ainsworth is protected by something!
Aletta Ainsworth takes 0 Darkness damage.
Aletta Ainsworth was inflicted with Poison!
Medea Arvanite's turn.
Aletta Ainsworth takes 5 Earth damage.
Aletta Ainsworth takes 7 Darkness damage.
Aletta Ainsworth's turn.

The only things I can see this spell doing threatening damage to is dodge builds/physical tanks (okay, and PvE, but if you adjust it for PvE then you may kill it in PvP), so nerfing the damage in any way is not the solution. It's not like they can charge mind it, so you will never see it even reach half the damage potential of Magaisendo. The poison is the problem, and I don't believe reducing status infliction rate is a good solution. I actually believe that poison itself does too much damage, and should not be taking 10% HP per round. 5% would be more acceptable, as it's already by far the most crippling status effect. In addition, I also agree with poison cures granting temporary immunity.