DM: You've just been hired by a giant to take
him to the far away mountians! He warns you
of the long, hard trail before you but ensures
you it's possible to do!
Me: What if the bard polymorphs him into a
mouse and we sneak him throught the
city's teleporter to jump 500 miles?
My poor DM who loves out of the box thinking
but now has to scrap his prepared fights: