Heroic: Opening of the Dark Portal

This was fairly easy to solo as a 80 Protection Paladin. My gear consisted of epics from mostly 10-man Naxxramas and heroics, as well as a few pieces from 25-man Naxxramas.

I had expected my dps to be rather low, but it turned out to be just a little bit lower than a badly geared level 70 group(who is still able to make it).

Rift Lords are very easy to kill, and you can use those to get your health/mana back up.

Rift Keepers on the other hand are quite powerful, depending on what kind it is.
The warlocks(shadow based spells) are even easier than Rift Lords, as they'll only be using Shadowbolt Volley, with quite a long time between each cast. Then there's the mages(frost and fire based spells), which are quite powerful. Their Pyroblast hits for about 5k if not resisted, and they'll be spamming Frostbolts for 1-1,5k damage constantly.

The best way to defeat the Rift Keepers is to use specific Auras to reduce their damage. Shadow Resistance Aura is useful, but not needed, on the warlocks. As for the mages, I found using Frost Resistance Aura, and then change to Fire Resistance aura for the Pyroblast to be quite useful.

NOTE; You can see if it's a warlock or mage before engaging, by looking at the staff it's wielding. A staff with a skull is a warlock, and a staff with crystals is a mage.

As for the bosses, all of them are quite easy, with third being the hardest and second the easiest. Make sure to stand near their portals on First and Second boss, to prevent the adds from nuking the shield.

First boss will throw some arcane stuff on you every now and then, but didn't stun me once. He may only do it when there's more than one person in range, but it may also be because I resisted all of the stuns. Quite easy.

Second boss has only got two notable abilities. A knockback, and a self-buff increasing attack speed by 200%. He'll also place a stacking debuff on you, reducing healing taken by 10% for each stack, but it's nothing to worry about if you just keep Holy Shield up. The highest ammount of stacks I got was 6, where I then managed to avoid every attack and had it run out. I also never got below 90% health. Very easy.

Third boss is rather bothersome, but you're able to drink/eat up before engaging him. He'll stun you every now and then, as well as breath Sand at you for about 3k damage, also reducing your attack speed for a bit. The worst part about the fight is how long it is, due to the stuns you'll be getting, but it's not really such a hard fight. Easy.

The rifts after second boss spawns faster than the rest, and from the 15th Rift I started having others opening when the mobs were at 10-20% health. The Lords/Keepers doesn't spawn instantly from the rifts though, so there's no need to panic if you don't kill them fast enough.

All of this was done without use of the Beacon.

In 4.2, its attunement process was removed and it no longer requires you to run a prior CoT instance.

This is located in Caverns of Time, and the Dungeon is called The Black Morass