Emil aura

function()
    local debuff_name, warning_time, below4 = "Lacerate", 7.2, 4
    local _,_,_,_,_,_,expires, etc = UnitDebuff("target", debuff_name, nil, "PLAYER|HARMFUL")
    local red="|cFFff0000"
    local white="|CFFffffff"
    local green="|CFF000000"
    if expires ~= nil then
        local time_left = expires - GetTime()
        if time_left < below4 then
            return green..("%.1f"):format(time_left)
        end
        if time_left < warning_time then
            return red..("%.1f"):format(time_left)
        end
        return white..("%.1f"):format(time_left)
    end
end