This is the second-to-last boss. The final boss’ door is directly above this one. Just two or three jumps above it, actually. But, after beating this thing, you’re center back to the starting spot in the overworld and have to raft back to the island (or use the quick travel spell and hope enough things drop magic refills) then go all the way back through World Six again to make those two or three final leaps. Like I said, BUSY WORK; THE GAME.