Koebu

"Our best chance is to not let them board at all. We will be the strong gust of wind from the north that drives them back. But first, everyone gather around Fenti. The spirits will protect us."

Koebu nods his head to Fenti, who grows to several times his normal size. The spirit then moves toward the center of the ship, where it is easy to gater around. Once everyone moved up next to the raptor, Koebu waves his arms in a grand gesture and thick woody roots grow from the spirit's feet. They seek out each person surrounding the bestial spirit and crawl up their legs like creeping vines. The hearty roots quickly dissolve into translucence and then disappear entirely. However, their protective strength remains hardening the flesh of Koebu and his allies.

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Might as well use Protective Roots shortly before they catch up. It's a lot easier to get everyone together for it before the battle starts, then we can re-scatter. Since Fenti is large, it shouldn't be much trouble to get the whole party adjacent, and whatever NPCs are easily at hand.

Everyone gains resist all 4 until the end of the encounter.