The negotiations end with Magnus's final rebuttal, and both Jorran and Mirielle open hostilities with spell and blade. The goblins react immediately, and their leader gives an angry command in his native tongue. It may have been 'Attack!', 'Kill them!' or something else along those lines; the content is rather clear from context.

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as said, everyone acts on initiative no matter who makes the first move

Jorran 24
Keeva 20
Mirielle 15
Goblins 8
Magnus 8
Aya 7

need action from Keeva