For were there such friends anywhere
As Slytherin and Gryffindor?
Unless it was the second pair
Of Hufflepuff and Ravenclaw.
A silver tree with golden apples
Statue with a twinkling eye
Luminous Pool with something in its depths
Talking Toadstools
Werewolves
Centaurs
Merpeople
Ghosts
Selfish
Ordinary
Cowardly
Ignorant
Draw your wand and try to discover the source
Draw your wand and stand your ground
Proceed with caution, keeping a hand on your still-concealed wand
Withdraw into the shadows, reviewing offensive and defensive spells that might be appropriate
Left
Right
Home
A log fire
Fresh Parchment
The Sea
Trusted
Feared
Praised
Imitated
Hexes and Jinxes
Castle Secrets
Care of Magical Creatures
Transfiguration
Have all 3 of you fight (without informing the troll)
Confuse the troll
Draw lots to see who will fight
Volunteer to fight
Wait!
Here's an interesting quiz for you.