Special things? Hold threat, and while surviving the bosses abilities try to dish out as much DPS as posisble to help your raid-group? First thing that comes to mind.
Oh well there might be some use for Dark Simulacrum for certain abilities from for example "Frost Strike" from Dark Shamans you can copy and use that spell
Nevermind I found a list of spells that can be stolen for your benefit they are as following:
Norushen - Hurl Corruption [TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]The caster hurls a ball of Sha energy, inflicting 693750 to 806250 Shadow damage to the target. This attack cannot be absorbed.[/COLOR][/TD]
[/TR]
[/TABLE]
(Titanic Corruption add during Test of Confidence) spell=144649
Dark Shamans: Froststorm Strike [TABLE="width: 320"]
[TR]
[TD][TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]Deals 300000 Frost damage and causes the target to take 25% additional Froststorm Strike damage for 30 sec.[/COLOR][/TD]
[/TR]
[/TABLE]
[/TD]
[TH][/TH]
[/TR]
[TR]
[/TR]
[/TABLE]
(Haromm) spell=144215
Dark Shamans: Froststorm Bolt
Fires a bolt of bitter frost, dealing 400000 Frost damage. (Kardris) spell=144214
Nazgrim: Arcane Shock [TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]Shock a target, inflicting 138750 to 161250 Arcane damage and increasing Arcane damage dealt by the caster by 25% for 10 sec. Stacks up to 99 times.[/COLOR][/TD]
[/TR]
[/TABLE]
(Kor'kron Arcweaver) spell=143432 (may not be worth it due to raidwide damage if not interrupted)
Spoils of Pandaria: Rage of the Empress ([TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]
Rallies nearby friendly targets, increasing all damage dealt by 50% for 30 sec.[/COLOR][/TD]
[/TR]
[/TABLE]
) (Set'thik Wind Wielder) spell=145812
Spoils of Pandaria: Residue ([TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]
Applies a thick layer of restorative amber residue to nearby friendly targets, healing them for 150000 health every 3 sec.[/COLOR][/TD]
[/TR]
[/TABLE]
)(Zar'thik Amber Priest) spell=145786
Garrosh Hellscream: Chain Lightning [TABLE="width: 301"]
[TR]
[TD][COLOR=#FFD100 !important]Inflicts 243750 to 256250 Nature damage, chaining to nearby enemies.[/COLOR][/TD]
[/TR]
[/TABLE]
(Farseer Wolf Rider) spell=144584
Thats some I found off of
this guide, I dunno how useful it would be to actually code support for it but it might be fun to try out for shits and gigs ^^