When the additional rabbits -- Bearclaw Leverets -- are spawned, Black Mage ES+Sleepga II the leverets, then Paladin proceeds to kite the Bearclaw Rabbit with Gravity & Bind help from the Red Mage. Other melee move in and slaughter one of the Leverets at a time, each one having low HP (Build 100 TP, lvl3 Skillchain + Magic Burst is enough to kill one) When they wake up, the Red Mage then ES+Sleepga. If they wake up again, both mages try to keep them slept as best as they can. One of the leverets is randomly keyed to despawn all the others, just pick one at random and move through them all (First time we got it on 3rd kill, the second time 1st kill, the third time 5th kill).
When these rabbits are gone, the PLD should continue kiting until mages are at full MP, then stop and fight it like normal. This rabbit hits VERY hard and the Paladin will require a LOT of healing. Whirl Claws hits all within range for 400-600 damage, but can be stopped by shadows. Mages should stand back at the very limit of casting range to avoid this special attack.
Melee should use accuracy food, as the Bearclaw Rabbit has VERY high evasion. In addition to the normal rabbit weapon skills (Foot Kick, Whirl Claws) he also uses a Blink skill and an HP recovery (1000-1300 HP recovered). Very weak to spells, but Black Mage should nuke slowly because the Paladin has a very hard time holding hate with taking so much damage. Red Mage should focus on support healing, as this rabbit hits VERY hard. Once the Bearclaw Rabbit falls, go open the chest and receive a reward and 2,500 experience points.