Dark Hunter - Swap Core lev 3 with Core level 6

[gurth83]

To make Dark Hunter some alternative to 2 rouge splash, plz swap Core level 3 with Core level 6.
It think this change is not overpowerd compared to 2 rouge splash. Medium aromor is required for Underdark Defenses so no evasion, no swashbuckling, no monk stances. It works only for traps so no comparation to improved evasion which works for spells too.
Thanks.