Winters can be attributed to being an alien planet with a far different orbit than Earth. The wall is basically a big glacier, we have those in real life (though the wall has been shaved and cut over centuries). Direwolves are a hyper intelligent animal.
Then again, LOTR hardly used magic either. It's mostly enchanted items. The wizard hardly ever uses spells, and the spells he does use are basically just light and heat.
Then again, LOTR hardly used magic either. It's mostly enchanted items. The wizard hardly ever uses spells, and the spells he does use are basically just light and heat.