Fire spell

A fire spell is an incantation used to magically conjure flames, to control fire or to make a flame grow. These spells are very powerful, for they control the most important of the four elements, fire, pure energy at its most powerful and terrible state.

Merlin has shown to have a certain aptitude for fire spells. He's often used these kind of enchantments and has demonstrated his great power through them.

The known fire spells have been used in these occasions:
 * Lyft sy þe in bǽlwylm ac forhienan se wiðere, used by Merlin to defeat the Afanc. This spell combined the elements of fire and wind (The Mark of Nimueh).
 * Non-verbally, by Edwin, to light a candle while he was arranging his instruments for alchemy (A Remedy to Cure All Ills).
 * Forbærne yfel, used by Edwin. After having thrown Gaius against a wall, he conjured a circle of fire around him. The flames disappeared when Edwin was killed (A Remedy to Cure All Ills).
 * Forbearnan firgenholt, used by Merlin to make a big branch fall onto a bandit (The Gates of Avalon).
 * Leohtbora, used by Merlin to light a torch in the stairwell leading into the burial vault below Camelot (Excalibur).
 * Cume her fyrbryne, used by Merlin when he tried to kill the Black Knight using his mortal magic, conjuring a line of fire from his feet that travelled along the ground to consume the knight. Anyway the spell failed for the wraith could only be killed by a sword begotten into the Dragon's breath (Excalibur).
 * Bærne, used by Merlin to start a blaze that trapped Kanen's brigands (The Moment of Truth).
 * Ástríce, used by Merlin during his magical fight with Nimueh. The young warlock cast this blast of magical energy stretching out his hand. Anyway, Nimueh was able to deflect this attack with her bare hand, being a powerful High Priestess of the Old Religion (Le Morte d'Arthur).
 * Forbærne! Ácwele!, used by Nimueh to send fire balls against Merlin (Le Morte d'Arthur).
 * Forbearnan firgenholt, used by Merlin to make the fire in a torch grow to distract some guards. This could also be the spell Morgana accidentally enchanted in her mind that made the flame (which she also lit) of the candle in her chambers grow (The Nightmare Begins).
 * Forbearnan, used by Merlin to lit a fire to keep himself warm while in the woods (The Nightmare Begins). Merlin used again this spell in several occasions: as a heat spell (The Witchfinder), to block the path with a wave of fire and thus burning several of Cenred's men alive during the Great Battle for Camelot (The Tears of Uther Pendragon) and to conjure a flame on his hand to reveal his powers to Gilli (The Sorcerer's Shadow).
 * Gar onbærne, used by Merlin to set a bandit's spear on fire and thus making him fall from the tree he was hiding on (The Sins of the Father).
 * Bryne, used by the young warlock to light a torch. In this episode Merlin was also able to light several candles, just by moving his hand (The Lady of the Lake).
 * Hoppaþ nu swicae swá lig flíehan, used by Merlin to make the flames of he candles he had lit fly, to amuse Freya (The Lady of the Lake).
 * Wæcce on sæbát bælfýr mæst, used by Merlin to set the boat, in which he had laid Freya's body, on fire (The Lady of the Lake).
 * Non-verbally, used by Trickler to amaze the court spitting fire out of his mouth (without revealing his powers) (Sweet Dreams).
 * Non-verbally, used by Trickler to light a candle while he was preparing a love potion (Sweet Dreams).
 * Non-verbally, used by Morgause to conjured a column of fire to kill Arthur. This spell probably combined the powers of Fire and Wind, because a strong air current could be heard (The Castle of Fyrien).
 * Miere torr sweoloþhat, used by Merlin to blow Morgause's fire wall off. The explosion caused all those who were in the room to be blasted away, and the ceiling over Morgause's and Cenred's heads collapsed (The Castle of Fyrien).
 * Non-verbally, used by Morgana to set the "magical gift" (some kind of ashes, maybe from a phoenix) contained in a metal box on fire. This allowed her to activate the Phoenix Eye she had given to Arthur (The Eye of the Phoenix).
 * Non-verbally, by Morgause to light a torch for Morgana while telepathically calling her sister. The High Priestess cast this spell from afar, because she was in a secret room high up in the castle (Queen of Hearts).
 * Intend lig, intend lig, used by Merlin, under the effect of an ageing spell, to make the fire of the pyre he was led to grow, consuming it in a massive fire ball (Queen of Hearts).
 * Forbærne æltæwelice, used by Merlin to set some ropes on fire to escape from the slave trader Jarl (The Coming of Arthur).
 * Bæl on bryne, used twice by Merlin to set pieces of wood on fire (The Darkest Hour).
 * Ontende þisne wyrm þæt he licgeþ unastyred a butan ende, by Dragoon. Merlin, while resting after having defeated Morgana in a magical battle, made a simple hand gesture and started a fire, in which he threw the Fomorroh while enchanting it, so that it couldn't grow again (A Servant of Two Masters).
 * Ligfyr onbærne swiþe, cast by Alator of the Catha, High Priest of the Old Religion, to creat a ring of fire around the altar on which Gaius was lying, so that he could perform the magical mental torture (The Secret Sharer).
 * Acwence þa bælblyse, used by Gaius when he tried to resist Alator's torture. This spell allowed him to temporarily extinguish the fire (The Secret Sharer).
 * Fyr wiþere, by Alator to vanquish the effects of Gaius' spell and strengthen his mental torture (The Secret Sharer).
 * Non-verbally, by Merlin to re-light the torches that Lamia had put out with her magic, while leading the Knights to her lair (Lamia).
 * Non-verbally, by Merlin to set the boat, in which he had laid Sir Lancelot's body, on fire (Lancelot Du Lac).
 * Bæl on bryne, cast by Merlin to block a corridor in the castle of Camelot by creating a rope of flames with the fire from to opposite torches (The Sword in the Stone: Part One).
 * Bæl on bryne, used again by Merlin to set a cart he was moving towards Agravaine and his men with telekinesis on fire (The Sword in the Stone: Part One).