Sora

"Enough of us, including the elementals, can get to the sleeping giant and all hit him at once, while keeping the invisibility alive. The fight should be over before those dwarves wake. That gives us time to keep get the dwarves to keep quiet, with the benefit of killing fewer slaves. If we attack the others first we don't know how many of the dwarves will help sound the alarm and wake up the sleeping group. No one has a silence spell or effect do they?"

Spoiler: OOC
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Just thought of it- with the magic IDing some time as passed. Once 10 minutes from the buffing outside the cave has passed I'll have more elementals showing up. Let me know when please.