Heroic Tos new abilities?

[Vampiregenesis]

How much change from normall to heroic besides more damage etc? i cant find a good guide on the net , i play a tank and a healer , first boss was more or less the same as normall , can someone describe the abilities or changes the bosses have on hc? like first boss this second boss this etc etc , it can make the life of those who pug easier.

[Temp name]

Read the dungeon journal

Goroth: Fel Eruption. Sometimes covers a quarter of the room with fel-fire
Demonic Inquisition: Suffocating Dark (DoT), Calcified Quills (Cone towards random player)
Harjatan: Numbers
Sisters: p1: Embrace of the Eclipse (healing absorb and shield on a boss)
Mistress: Numbers
Desolate Host: Dissonance (You do damage to people of the other realm), Spear of Anguish (healing absorb), bonecage armor + Shattering Scream
Maiden: Numbers.. Lots and lots of numbers
Avatar: Touch or Sargeras (Void Zones that need to be soaked), Black winds (tornadoes p2)
KJ: p1: Shadow reflection (adds), intermission 1: Rupturing Singularity (knockback), p2: same, intermission 2: same, p3: Flaming Orb (orb that nedds kiting)

[Aktec]

Just to add to above comment

Mistress: tornadoes don't have gaps between so have to use bodies of eels
Sisters: casts 2 'ultimates' instead of 1 per cycle

[Gorsameth]

How terrible are you at searching for guides that you cannot find heroic abilities?

http://www.wowhead.com/tomb-of-sargeras-raid-guides

[Radio]

Just to add to above comment

Mistress: tornadoes don't have gaps between so have to use bodies of eels
Sisters: casts 2 'ultimates' instead of 1 per cycle

Aaaand a few more:

Mistress:
- 3 Hydra shots instead of 1 (at least in larger raid sizes - we had 1 in a fairly large group in normal, 3 in heroic)
- no consuming hunger (so basically no soft enrage in p3)
- eels cast teleport ability

Host: Wither on spirit realm people - doubling the damage random people take from that long cast she does
Maiden: Swirlies that occur between hammers that can also give you bomb
Avatar: Blades leave puddle under any target hit