with killing bosses with macros

So I'm trying to make one (example, blood lord) but because of the mob spawn it makes it hard to calculate were to attack. I sometime end up punching a monster in front of him and that ruins the macro.
I tried using a mine bomb but for some reason he'll teleport sometimes and stand still other times.
Any help would be appreciated.
Thanks in advance
EDIT:Spears dont seem to work for me becasue either
A:He vanishes
B:I hit the mob infront of him

uhmm plz checks out the first page, there are lot of threads relate to what you asking,

Get the 1hit ko whole area hand bomb range mod..boom.