The Call of Destiny
The Winds of Change
The Enemy Within
Darkness before Dawn
Once & Future Legend
100

The name of the spirit that Tristan De Bois became, after being harnessed for vengeance by the High Priestess Nimueh.

What is a wraith?

100

The title of the first "two-parter" in the series.

What was The Beauty and the Beast Parts 1&2?

100

The reason Merlin gives Arthur as to why his chambers are a huge mess in Goblin's Gold. 

What is spring cleaning?

100

The first foiled assassination attempt by Merlin, under the Fomorroh's enchantment, to kill Arthur.

What is Merlin poisoning Arthur's food with Aconite?

100

The number of years Morgana spends living in a ditch in darkness, chained with Aithusa.

What was two years?

100

The name of Sophia's sidhe father in The Gates of Avalon.

Who was Aulfric?

100

The first episode in which Kilgharrah references an "ancient, evil alliance" between Mordred and Morgana.

What was The Witch's Quickening?

100

The names of the four friends that Arthur knights in The Coming of Arthur, who become the first commoners to attain the title of "knight' in Camelot history.

Who are Gwaine, Elyan, Lancelot, and Percival?

100

The meaning Kilgharrah gives Aithusa's name, shortly after Merlin presents the egg to him.

What is "the light of the sun"?

100

The two words Arthur (which are antonyms) uses to describe Merlin, shortly before he rides off to Camlann and Merlin searches for the Crystal Cave with Gwaine.

What are "brave" and "coward"?

200

The first episode to not feature a magical enemy in season one.

What was The Moment of Truth?

200

The word Arthur believes is "too big" for Merlin to know, which Merlin uses to cheekily describe Arthur.

What is supercilious?

200

The number of silk dresses Gwen gives Arthur to borrow to corroborate his made-up bet in The Castle of Fyrien.

What was two silk dresses?

200

The name of the episode where Arthur says "Thank you" to Merlin, an entire season before his last...

What was His Father's Son?

200

The name of the "ancient tradition" that the Knight's tease Mordred to do in The Dsir.

What is melding?

200

The name of Mordred's parental figure/guardian in The Beginning of the End.

Who was Cerdan?

200

The name of the woman Merlin sees on a scroll in The Nightmare Begins, whom he later pleads with to help Morgana escape Camelot.

Who was Forridel? 

200

The name of the episode where Gaius first uses the excuse "Merlin is at the tavern, Sire", when Arthur asks him for Merlin's whereabouts.

What is The Queen of Hearts?

200

The name of the feast in which Merlin faints for the second time this series.

What was the Feast of Beltane?

200

The name of the spirit who guarded the Impenetrable Forest.

Who is Queen Mab?

300

The name of the treaty signed between Camelot and Mercia in The Poisoned Chalice.

What was the Mercian Peace Accord?

300

The number of years ago that Gaius says The Knights of Medhir used to be Knights of Camelot, in The Fires of Idirsholas.

What is 300 years?

300

The one episode this season where neither Gwen nor Morgana appear.

What was Love in the Time of Dragons?

300

The official title of the circus performer who ends up dueling Uther, and administering a near fatal blow.

Who was The Gleeman?

300

According to Kilgharrah, the BLANK of a Vates were once considered a gift.

What were "the words"?

300

The ear/side of Morgana's the beetle first crawls into in A Remedy to Cure All Ills.

What is the right ear/side?

300

The direction Arthur's enchanted horse takes when him and Merlin come to a fork in the road on their way to Morgause.

What was the right side?

300

The name of the kingdom Arthur's one-time fiancee, Princess Elena, hails from.

What is Gawant?

300

I’mThe name of the mineral Sir Gwaine identifies as rare, and only found at the Ridge of Kemeray in Camelot.

What is iron ore?

300

The name of the person who says this: "Try not to look so surprised... I commanded an army in my day."

Who is King Rodor?

400

The number of shields (ranging from 1-20) of participating knights seen on the tournament board briefly in Valiant.

What is 11?

400

The three weapons Uther says will be used in the duel of honor between Arthur, and Vivian's father King Olaf.

What are a quarterstaff, mace, and sword?

400

The direction Gwaine decides to travel in, after helping Arthur on his quest in The Eye of the Pheonix (N, S, E or W).

What is South?

400

The number of tentacles the Lamia possesses (1-10), in her monstrous form.

What is 8 tentacles?

400

The name of the desecrated village, Arthur and his Knights come across in the wake of Morgana.

What was Asgorath?