I ran the last boss at lv 74 and brought my DK buddy along (level 72 though) to tank, just normal tank and spank for phase one. Once he went down in Phase 1 i healed everyone to full HP, dropped totems again (healing stream and wrath mostly) then once he was rezzed i dropped Fire ele, popped BL, DK held aggro for a bit but the boss died in literally 10-15 seconds. I didn't heal at all during that phase so my dmg went up a ton, lost the DK and one of my guys though.