Okay, so, here's the deal: one of the characters in my story is a sort of crazy hermit with the power to magically manipulate wood. Just by touching it, he can alter the physical properties of wood in various ways, wholly independent of the laws of physics. He can alter its shape with his mind (though he can't make it larger or smaller, there has to be the mass there to make the shape, like with clay), and he can alter the weight and strength of wood to virtually any value within a certain range. For instance, he can make wood that is simultaneously as strong as steel and as light as hydrogen. He uses this power of his to build insane, physically-impossible alterations onto his humble house until it's this massive multi-story abomination of twists and turns and balconies and bridges that would make OSHA commit seppuku just from looking at it.
And then he makes this house float into the sky.
This becomes the base of operations of the main villain he works for. And since the various forces that brought these magical powers into the world have also made most forms of modern technology useless, they exploit the fact that they're the only faction capable of flight to elude and wreak havoc upon their earthbound enemies. But the problem is I'm trying to work out how they'd get to the ground and back.
The idea is that the house itself has very limited means of controlling where it moves through the sky, and is mostly at the mercy of the wind except for complicated procedures requiring the direct intervention of the woodbender that can be put into place when necessary. So ideally this woodbending hermit would create magical aircraft out of his specially altered wood that would let his allies travel through the skies and between the sky fort and the ground, without him actually needing to be on the ship to mess with the properties of the wood further.
But the problem is, like I said, their access to means of propulsion is limited. Electricity, explosive combustion and steam power do not work properly (and yes, I addressed why this would be the case and yet life is possible).
Given the supernatural material they have access to and the aforementioned restrictions on technology, is there a method of propulsion they could use to craft an aircraft capable of moving in all directions, without the woodbender needing to be on board to alter the properties of the ship on command?