This was great! I love how you managed to figure out how to create an alliance without speaking.
One minor nitpick, I found this sentence confusing "
Others like the creature huddled together, strands of their being pulled away by the savage power of the voidgate". On careful inspection, it seems like you're using "being" as a noun, but when I first read it I thought you were missing a word (e.g. strands of their bodies being pulled away).
Great work as always.