[Snake]

Dark Imbue

Axe skill. Causes your Axe to extend with a dark blade similar to a scythe, increasing its Hit and dealing Dark magic damage (based on Dark ATK) when you hit an enemy with a basic attack or Ghost Axe skill. (Does not apply to gun attacks.)

Rank 1: Hit Bonus: 3, Dark ATK: 10%
Rank 2: Hit Bonus: 6, Dark ATK: 20%
Rank 3: Hit Bonus: 9, Dark ATK: 30%
Rank 4: Hit Bonus: 12, Dark ATK: 40%
Rank 5: Hit Bonus: 15, Dark ATK: 50%

It should be changed to:

Dark Imbue

Axe skill. Causes your Axe to extend with a dark blade similar to a scythe, increasing its Hit and dealing bonus Dark physical damage that ignores protection, when you hit an enemy with a basic attack or Ghost Axe skill. Attacking an enemy affected with Claret Call will extend the duration by 1 round, to a maximum of 5 rounds.

Rank 1: +5 Hit, 30% Dark ATK.
Rank 2: +10 Hit, 40% Dark ATK.
Rank 3: +15 Hit, 50% Dark ATK.

But if we're feeling bold and limiting, we could give it something new for its mere 3 round duration:

Dark Imbue

Sword, Polearm and Axe skill. Project a scythe of darkness from your weapon, increasing its Hit and dealing bonus Dark magic damage that ignores protection, when you hit an enemy with a basic attack or Ghost Axe skill. Defeating an enemy with a Dark Imbued attack will reap their essence, restoring your maximum HP based on Rank, up to a limit of 40% of your maximum HP. (Any healing that would put you above 40% HP is negated.)

Rank 1: +5 Hit, 30% Dark ATK, 10% Max HP recovery.
Rank 2: +10 Hit, 40% Dark ATK, 15% Max HP recovery.
Rank 3: +15 Hit, 50% Dark ATK. 20% Max HP recovery.