Potions with adjectives will change any object their used on. Use potions on the man to give him the qualities of a dragon!
Use any 3 out of these: scaley (scary green firebreathing winged potion) just type that word for word and it will get you through it very fast or you can just make a dragonlike potion. Lovecraftian potion should worok too. Of course there is also a dragonlike potion.