Hello again - another announcement from hp94!
It looks like Incanter's Absorption was miffed. It turns out Chaos Bolt is giving ridiculous amounts of spell power for Incanter's Absorption. After watching simple damage, it looks like instead of 15%, Chaos Bolt gives 100% or more than 100% of it's damage as spell power (I've seen it give double the damage worth, such as 3000 hit and 6000 spell power gained). That's actually more important than you think. The only safety Blizzard put in was that spell power gains cannot be more than 15% of the absorption present on the mage. Well, since all barriers count towards stopping Chaos Bolt, but no absorption is used, you can have warlocks spamming you with Chaos Bolt all day long increasing spell power by ridiculous amounts.
Here is a screenshot of the highest spell power I could find.
12k.jpg picture by 8u3jc - Photobucket
We actually hit 18,000 earlier, after a lucky 9k chaos and 6k chaos from both locks close together. We wasted our time going every 6 seconds to keep incanter's up, but it turns out that was mostly a waste of time. One lock had to leave and there was no higher spell power after that.
We did manage to have me Frostbolt one of them for fun. It crit.
WoWScrnShot_040110_002512.jpg picture by 8u3jc - Photobucket
That's a 6000 spell power frostbolt with no cooldowns used. Imagine an 18,000 spell power frostbolt or a fourth stack of Arcane Blast, all with Arcane Power up.
Back on topic, it appears that Incanter's Absorption is stacking ONLY if damage is taken more than once per second (World of Warcraft - English (NA) Forums -> IA Mechanics Revealed - Prepare for the worst). Otherwise it degenerates (See the first post). But if you were to get hit by a Chaos Bolt, then leave it, you'll keep the absorption amount for the 10 second duration, without it going down until the buff ends.
The Point: Multiple Warlocks, multiple healers, health stacking mage: Possibilities are endless; There is no more limit on spell power gains. Any time you get a 15k crit from Chaos Bolt in a BG with Fire Ward up, turn around and one shot that mo-fo =), he deserves it! Just have fun with Incanter's and Chaos Bolt!
And before anyone flames that you can't solo bosses with this: It's more of a public service announcement-Just enjoy it while it lasts.