Ninja seems a bit broken

[Alistaire]

Isn't it a 10 second buff that can be used every minute? 10+10+10+10+10=50seconds 50seconds/60seconds = .83333 or 83.33%

Yeah have fun coordinating that. You'll still have a lot but considering you need to suiton then do it you won't have 5 nin timing it perfectly in succession while handling mechanics.

if you use sneak attack = 500 potency ^^

You should probably take that part out of your post. Something about the whole "if you use sneak attack in group content at 50 you're missing out on trick attack, since they're shared recast.