DK's http://www.wowhead.com/?spell=55670 (50% slowing effect) and ferals http://www.wowhead.com/?spell=48485 (25%x2=50% slowing effect) stacks = 100% slowing effect.
In arena its nice etcetc, 3v3/5v5 mainly I suppose, could probably rape in 2s aswell.
by egg1337lol