Air 9 bless: useless?

[Saber Cherry]

I mentioned earlier that I thought "Unholy Thirst" would be a good Blood blessing, giving blessed units a life-draining "Bite" attack. But "Hemorrhagic Butchery", the art of striking an opponent to cause profuse bleeding, would be fun, too. It would be something like, "Any opponent wounded by a blood-9 blessed unit has a 25% chance of being affected by 'bleed', meaning they lose 1HP per combat turn until death."