Let's face it, even if they buff the numbers on Collective Unconcious to 3000 potency per tick and 90% DR it's still going to be a really boring ability. The animation for it is totally sweet so it needs two totally sweet and unique effects tied to it.
Let's see some ideas, the only guidelines are that you can't just copy the effect from some other class and avoid numbers, just put X potency or X%, values are for tuning and this is just about ideas. You also can't change the animation of the ability so it needs to be an AoE spell. You don't have to have the effect for both sects but it's nice if you do!
Here's my take on it.
Code:
Diurnal Sect:
Time Heals All Wounds
X% of damage taken while under the effect of Time Heals All Wounds is healed back over Y seconds.
The idea is trying to stay within the theme of the Diurnal Sect by providing a heal over time effect but doing so in a more interesting fashion. It would still require you to be channeling and stand still to maintain the effect but depending on the damage pattern you don't need to maintain it for a long time to get a powerful effect that would be kept in check due to the nature of scaling to incoming damage.
Code:
Nocturnal Sect:
Stasis Field (Yes, it would change name depending on the currently active sect!)
Prevent all damage taken by players while under the effect of Stasis Field. When the effect ends each player takes X% of damage prevented this way over Y seconds.
Again, the idea here is to try to stay within the theme of the associated sect and that means preventing damage (or delaying it, in this case). Dispersing damage spikes over a span of time feels very Astrologian to me. Again, you'd need to channel and remain stationary but you're rewarded with a powerful effect. Some mechanics may need to pierce this effect or alternatively the effect may have to "shatter" if a player prevents more than a set percentage of their maximum health in damage.
Also, as a final addition, there's nothing saying that the value of X in any of these effects HAS to be below 100%. it could be absolutely anything so please don't get hung up on the numbers themselves!
Thoughts? Ideas?