Extreme Measures

Finally, some help! As you can probably guess, we have trouble procuring blood.
Where can you get it? From the locals or animals. The locals are not an option, but the animals in the area are all infected, so it won't do either.
We'll have to resort to extreme measures. The Blight is leaving the land, and various creatures are returning. I've seen unicorns nearby, and I'd rather not do it, but...
We'll have to borrow their blood. I'll give you an artifact that will put them into a trance, giving you time to collect some blood, but be careful - if you take too much, I won't be responsible for any side effects!

What about unicorns? Are you done? There's no time.

They say whoever drinks unicorn blood will be forever cursed... But it can't get any worse for us, can it? Let's see what we have...
Well, that's something... We can consider the experiment successful. I hope the unicorns are alright? I'll analyze the results. You can go.