... and you could spice up the normal mode version. What would you do? How would you improve it?
1.) For references, please use the WoWpedia page (Bosses and enemies and the skills they use):
2.) You are allowed to add more skills to enemies and bosses but are not allowed to remove anything that exists.
3.) You are allowed to add one more heroic only boss (if you want)
4.) You are allowed to add/change some of the existing mobs (let's say, there is a patrol with 2 "Corrupted Reaver" in there, you then decide in heroic mode, it should be a patrol of 1 Corrupted Reaver and 1 [insert your mob here])
Alright, ready? Let's start!
I will edit this posts later on and finish it.
Alright, here is my version.
Difficulty wise, Ragefire Chasm heroic would be a step up from the MoP launch heroics (like the Troll dungeons back in Cata).
Each mob in there would get at least one more ability (I will later write down who gets what) and some new mobs would be added.
Adolescent Flame Hound
Rend Flesh - Rends an enemy's flesh, inflicting Physical damage every 3 seconds.
New: Part of the Pack - Increases damage done by 15% for each Adolescent Flame Hound, Mature Flame Hound or Flame Hound Pup within 20 yards.
Mature Flame Hound
Vicious Tear - Viciously tears at an enemy, inflicting Physical damage.
New: Part of the Pack - Increases damage done by 15% for each Adolescent Flame Hound, Mature Flame Hound and Flame Hound Pup within 20 yards.
New: Flame Hound Pup
These mobs have low life and are added to various Flame Hound groups.
Lava Drool - Burning lava drool inflicts Fire damage per second to enemies who enter the area.
Marked for Death - Whoever kills the Flame Hound Pup will be marked for death by the Flame Hound pack! Nearby Flame Hounds will ignore their current target and start to attack the marked target until it is dead.
Changed: Inferno Charge - Adarogg fixes his eyes on a player, charging their location and inflicting Physical damage to all nearby players on impact. Adarogg's charge leaves a trail of fire behind which deals damage to anyone who stands in it and lasts for 45 seconds.
Flame Breath - Adarogg breathes flames, inflicting Fire damage to a player.
New: Go for the Throat - Adarogg attacks a random player and start to tear the player appart, dealing physical damage each second. This effect ends once a single attack deals more then 100.000 damage or Adarogg has taken 750.000 damage. While Adarogg is attacking his target he has a 30% higher chance to get critically hit. If the target is still alive it will bleed for the rest of the fight, taking damage every 3 seconds.
Fireball - Hurls a ball of Fire at an enemy, inflicting Fire damage.
Flame Spout - Summons a flame spout under a nearby player, erupting for Fire damage after 3 seconds.
New: Immolation - Immolates an enemy, dealing initial fire damage and then dealing fire damage every 3 seconds for 21 seconds.
New: Mark of Flame - Puts the Mark of Flame on an ally. The marked ally deals 25,000 additional fire damage whenever he deals damage.
Corrupted Strike - Strikes an enemy with a corrupted blade, inflicting Shadow damage.
Incite Frenzy - Incites a frenzy in all nearby Flame Hounds, increasing their attack speed and movement speed by 50% for 20 sec.
New: Mend Pet - The Houndmaster mends one of his pets, healing 350,000 damage per second for 8 seconds. Channeled.
Serrated Blade - Inflicts Physical damage to an enemy every 3 sec. for 15 sec.
New: Breaking Slash - A violent slash that breaks an enemies armor, reducing their armor by 33% for 6 seconds.
New: Charging Slash - Charges a random target and immediatly starts slashing away, dealing 75% weapon damage every 0.50 seconds for 4 seconds in a 180° radius in front of the user.
Dark Shaman Acolyte
Changed: Bloodlust - Increase the melee attack speed of all allies within 30y by 50%.
Corrupted Lava Burst - Hurls a bolt of lava at an enemy, inflicting Fire damage.
New: Summon Corrupted Fire Totem - Calls forth a corrrupted fire totem that shoots fireballs at nearby enemies and explodes for AoE damage after 10 seconds or after being destroyed.
New Gaunlet Event
New: Twisted Elemental
These mobs are part of a heroic only gaunlet event. 4 of them have to be killed, after all 4 are dead, Dark Shaman Koranthal becomes active and starts attacking immedtiatly. Additionally, Dark Shaman Koranthal will channel Shadowstorm for the duration of the whole gaunlet event, although at a slower rate as during the battle.
Twist Magic - Twists a random positive buff on an enemy, turning all positive effects into negative ones and doubling their effect. (A HoT would become a DoT, dealing 200% of the healing as damage. The "Spellpower" buff would reduce spellpower by 10% instead of buffing it by 5% etc.)
Chilling Heat - Chilling heat surrounds the Twisted Elemental, dealing frostfire damage to everyone within melee range and reducing the attack- and movementspeed by 5%. Stacks up to 4 times.
Grounding Air - Throws a random enemy gently in the sky, crushing him down after 3 seconds, dealing 100,000 physical damage and stunning him for 3 seconds.
Dark Light - A pillar of light appears at the position of a random enemy, turning black over 4 seconds. When the pillar has turned fully black it will erupt in shadow explosion, dealing 300,000 shadow damage to everyone within 30y. The damage reduces the farther away players are from the pillar.
Boss: Dark Shaman Koranthal
Changed: Twisted Elements - Dark Shaman Koranthal hurls a bolt of twisted magic at an enemy, inflicting Shadow damage and afflicting the target with Twisted Weakness.
New: Twisted Weakness - Increases the damage of the next Twisted Elements by 50%. This effect stacks.
New: Twisted Volley - Whenever Dark Shaman Koranthal's Twisted Elements is interrupted he will immediatly attack with a Twisted Volley, dealing shadow damage to all enemies within 100y. Twisted Volley removes the Twisted Weakness effect but afflicts all targets with Shadow Weakness.
New: Shadow Weakness - Increases shadow damage taken by 20%. This effect stacks.
Changed: Shadow Storm - Dark Shaman Koranthal teleports on the upper ledge and calls down a hail of twisted elements that rain from the sky for 15 seconds, inflicting Shadow damage to all players within 2 yards of each impact and also afflicting them with a stack of Twisted Weakness. After the storm fades he will teleport back to the lower level.