Watch it on Viewly
end-preview
In the Game of Thrones season 7 finale we got a look at how the Night King has begun to utilize Viserion as a weapon of his own . The Night King rode on Viserion's back to The Wall, where Viserion proceeded to breathe blue fire upon The Wall, eventually causing it to melt and topple to the ground - allowing the White Walker and wight army to cross the barrier that's kept them out of Westeros for centuries.