A Connecticut Yankee in King Arthurs Court by Mark Twain Chapter 39 Page 7

comparison with a spectacle like this; they could be but child’s play, contrasted with this mysterious and awful battle of the gods. Yes, all the world knew it was going to be in reality a duel between Merlin and me, a measuring of his magic powers against mine.

It was known that Merlin had been busy whole days and nights together, imbuing Sir Sagramor’s arms and armor with supernal powers of offense and defense, and that he had procured for him from the spirits of the air a fleecy veil which would render the wearer invisible to his antagonist while still visible to other men. Against Sir Sagramor, so weaponed and protected, a thousand knights could accomplish nothing; against him no known enchantments could prevail. These facts were sure; regarding them there was no doubt, no reason for doubt.