Noob Sacrifice Question

[Sorry if this is a v. noobish question]

I'm a primary necro, and have just read a few threads about how to get/maintain an army of minions. One of the spells used in this is Verata's Sacrifice. I had a quick look, and it says:

Sacrifice 10% of maximum health. For 8-18 seconds, all undead allies gain 10 health regeneration. All conditions are removed from those allies and transfered to you.

When does the 10% health sacrifice end? After the 8-18 seconds? When I next die? When I enter a town? Never?

Thanks in advance.

Health sacrifice is an additional cost to use the spell, it is taken when you cast the spell.

Oh i get it. I thought it would mean that instead of having max health as 400, you would only get 360, and you wouldn't be able to get more than that. I didn't realise it would just take 40 away from your health. I'm such an idiot. Thanks for your help.

You don't lose the 10% permanently. You use the skill, lose 10% of health,you get the health back right there on the spot. It just recharges.

as i read the last part of the spell, i think that any Hexes on them when you cast this are placed on you and removed from them.. .not the life you spent to get them but the hexes and or enchantments on them go to you now.