He looks a bit creepy.

Morvran is the Prifddinas Slayer Master. 85 Slayer and at least 120 Combat are required to to be a assigned a task by him, making him the highest-level Slayer Master available. You can also talk to him to play the Rush of Blood Distraction and Diversion.

During the Elven Civil War he served his uncle, the now deceased former Lord Iorwerth, as the Iorwerth clan's Head of Intelligence, as well as been in charge of interrogation and assassinations. In fact, you witness him assassinate Idris towards the beginning of Regicide.

After the Civil War was brought to an end, he left Tirranwn to travel and eventually met Kuradal who shared her knowledge with him and convinced him to become a Slayer Master.

Morvran will bestow the "of the Iorwerth" title upon you after successfully completing 8 Dark Beast tasks for him.

Assignments	Location(s)	# Assigned	% Chance of task
Abyssal demons	Slayer Tower, Abyssal Space, Kuradal's Dungeon	180-300	2.30%
Acheron mammoth	Iceberg North of Fremennik Province.	30-55	1.84%
Adamant dragon	Brimhaven Dungeon	40-60	1.84%
Airuts	South West of the Piscatoris Fishing Colony, Kuradal's Dungeon	150-180	2.30%
Aquanites (50 Slayer points to unlock)	Fremennik Slayer Dungeon	195-240	2.30%
Automatons (Generator, Guardian, Tracer)	Temple of Guthix	80-100	1.84%
Aviansies	God Wars Dungeon	150-180	2.07%
Black demons	Edgeville Dungeon, Taverley Dungeon, and Chaos Tunnels	230-300	2.30%
Black dragons	Taverley Dungeon, Lava Maze, Evil Chicken Lair	50-110	1.50%
Camel warrior	On a island East of Sophanem	35-55	1.84%
Celestial dragons	Dragontooth Island Resource Dungeon	150-180	2.30%
Chaos giant		80-120	1.84%
Corrupted creatures (Corrupted scorpion, Corrupted scarab, Corrupted lizard, Corrupted dust devil, Corrupted kalphite guardian/marauder, Corrupted worker)	Sophanem Slayer Dungeon	150-250	2.30%
Crystal Shapeshifter	Tarddidad	110-150	2.76%
Dagannoths	Lighthouse Dungeon, Waterbirth Dungeon, Chaos Tunnels	205-290	2.30%
Dark beasts	On the Light Temple Path and Kuradal's Dungeon	180-300	2.76%
Desert strykewyrms	East of Al Kharid	110-190	1.61%
Edimmu	Motherlode Maw Resource Dungeon in Prifddinas (requires 115 Dungeoneering)	170-265	2.30%
Elves	Lletya, Elf camp and Prifddinas	150-180	<2.76%/td>
Ganodermic Creatures beast or runt	Polypore Dungeon	85-110	1.61%
Gargoyles	Slayer Tower, Chaos Tunnels and Kuradal's Dungeon	180-300	1.84%
Gemstone Dragons: Dragonstone, Onyx, or Hydrix.	Gemstone Dragon Dungeon	80-130	2.30%
Glacors (50 Slayer Points and completion of Ritual of the Mahjarrat to unlock)	Glacor Cave	60-85	1.84%
Greater demons	Brimhaven Dungeon, Entrana Dungeon, Wilderness, Ogre Cave, and Kuradal's Dungeon	180-300	2.53%
Grotworms	Grotworm Lair	100-180	2.30%
Ice strykewyrms	In a cave to the East of room just before the cave in which the Muspah was frozen during The Tale of Muspah	120-240	1.84%
Iron dragons	Brimhaven Dungeon, Kuradal's Dungeon	75-130	1.61%
Kal'gerion demons (Only at 90+ Slayer)	Kal'gerion Resource Dungeon on the South West side of the Daemonheim Peninsula (requires 90 Dungeoneering)	60-120	1.15%
Kalphites	Kalphite Hive, Exiled Kalphite Hive	205-300	1.15%
Lava strykewyrms	South of the Lava Maze in the Wilderness	60-120	1.84%
Living Wyvern	Asgarnian Ice Dungeon	40-65	1.84%
Lost Grove Monsters (Vinecrawler, Bulbous crawler, Moss golem)	The Lost Grove	100-120	2.76%
Mithril dragons	Ancient Cavern	30-50	1.84%
Muspah (50 Slayer Points and completion of Fate of the Gods to unlock)	The Cradle on Freneskae	150-180	2.30%
Mutated Jadinkos (males, guards, babies)	Jadinko Lair	195-265	1.84%
Nechryaels	Slayer Tower, Chaos Tunnels	170-265	2.30%
Nightmare creatures	Freneskae through the World Gate	110-160	1.84%
Nihil (Blood, Ice, Shadow, Smoke)	The Pit on Freneskae (50 Slayer Points and completion of Fate of the Gods to unlock)	50-110	2.30%
Order of Ascension Members (Rorarius, Gladius, Capsarius, Scutarius)	Ascension Dungeon	120-150	2.30%
Ripper demons (Only at 96+ Slayer)	Abandoned mine under Abby Citharede	60-85	1.84%
Rune dragon	Mount Firewake on Kethsi	50-75	1.84%
Shadow Creatures: Truthful, Blissful, or Manifest.	Amlodd district of Prifddinas	100-150	2.30%
Soul devourers (Salawa akh, Feline akh, Scarab akh, Crocodile akh, Gorilla akh, Imperial (mage, ranger, warrior) akh)	Sophanem Slayer Dungeon	150-250	2.76%
Stalker creatures (Seeker, Soulgazer, Soulgazer (Elite))	Stalker Dungeon	140-190	1.84%
Steel Dragons	Brimhaven Dungeon, Kuradal's Dungeon	50-125	2.07%
Tormented demons (50 Slayer Points and completion of While Guthix Sleeps to unlock)	Temple of Guthix, far below Lumbridge	50-75	1.84%
TzHaar	TzHaar City	95-130	1.84%
Vyrewatch	Burgh de Rott, Meiyerditch, and Darkmeyer	110-155	1.61%
Waterfiends	Ancient Cavern and Ghorrock Fortress	205-300	2.07%

The percents listed in the table are the base values. Blocking a creature will remove it and thus increase the odds for all other creatures. Preferring a creature task will double the chance for that creature.

Points Awarded:

Points are awarded by each Slayer Master upon completion of a task (note that you will only receive half of the full points reward until you have completed Smoking Kills).

Points Per Task	Points Per 10th Task	Points Per 50th Task	Co-Op Points Per Co-Op Task
20	100	300	8

Slayer Challenge:

Requirements:

• 120 Combat
• 85 Slayer
• Completion of Plague's End

Morvran needs you to retrieve several lost fragments of the goddess Seren by killing the following bosses on your own and returning the Dark crystals to him:

Note:You can also start this challenge by spending 100 slayer points per week to get this special task assigned to you.

• Giant mole
• Kalphite Queen
• King and Queen black dragon
• Dagannoth Prime, Rex, and Supreme
• Commander Zilyana, General Graardor, Kree'arra, and K'ril Tsutsaroth
• Araxxi

Reward: 50,000 Slayer experience, 45 Slayer Points, A free retune of a Max Guild portal, and increases the cap which you can obtain black crystals per task by one.