Magnus’s RPG empire on the portal.

Well, maybe it will work. Jack might try to cast an ice arrow, and maybe the water will freeze in the hold?

"Great idea," I say, glad that there's a mage on board!...but then a gremlin runs up and reports that we're being pursued. "The freezing will only add extra weight to the ship!" I say. "But it's up to you. I kneel and pray to the divine wind, Kamikaze..."