Full: You take on the aspect of the rabbit. Your Energy returns to maximum and you have -2 Energy degeneration. You have +300...600 maximum Health, "a vicious streak a mile wide", "nasty, big, pointy teeth", and cannot be the target of enemy spells. All enchantments upon you are removed. Rabbit attacks replace your skills. You gain Energy every time you take or deal damage. If your Energy reaches 0, this skill ends after 3 seconds. When this skill ends, you take 1000 Holy damage.
Trap. When Rabbit Hole is triggered, all nearby foes are knocked down for 2...5 seconds and take 90...120 damage. Rabbit Hole ends after 90 seconds. While activating this skill, you are easily interrupted.
You can use the powerful Hop+Hole combo every 15 seconds, so try to use it on each new target.
Using Rabbit Hole without the protection from Rabbit Hop is ill-advised.
Yes, this skill is overpowered, but Anet doesn't care. Still, I can't use it to get pictures of Maui's boobs.
Usual Notes About Aspects
This skill sets your energy regeneration to -2. Thus, every class will lose energy at a standard rate regardless of original energy regeneration. Likewise, naked caster-class characters won't lose the energy pips given by their squishy armor.
Since the energy depreciation is set, skills that give you energy regeneration such as Blood Ritual or Blood is Power are useless.
Since the energy depreciation is set, equipping a zealous weapon will give no negative effect. You will gain double energy, once from the positive effects of the zealous weapon, and again from the positive effects from the skill. Weapons such as daggers and scythes are particularly effective as they hit more often than other weapons.
This skill doesn't count on any elite Skill Hunter title track.
As the totem skills do not count as attacks, Signet of Stamina can be useful here as it will last the duration of the skill unless you manually attack. But then again, why would you even bother to get that crappy skill anyway? You get +300-600 HP from the blessing!
Charm Animal continues to function, allowing you to use a pet, even though the Caerbannog Blessing skills replace your entire skill bar.
The blessing will not remove any stances, but you'd be a moron if you don't replace them with Rabbit Evasive Maneuvers afterwards.