Ple-Sen
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— If we're going back, we have two scenarios. In the first one, we kill the redfaces, process them into provisions, and move on. In the second — we kill them again, then resurrect them, or immediately wound them non-lethally to take them prisoner and use them to get through that zone where we need to kill half the squad. The conditions didn't say we can't sacrifice slaves, so there shouldn't be any problems.
Interesting plan, but there are two nuances:
1) It's not a fact that the resurrection items won't be needed for our own
2) Even if no one in the squad needs them, there will be at most four imps here. There are five of you. If the pegasus counts too, then six. So additional sacrifices may be needed.