tbw I forgot to say that I checked every spot for units to be there and one or two even were corpse traps
![Smile :)](./images/smilies/icon_smile.gif)
(btw the last screenshot the huge jump to the left after the first jump is an ulti tower btw I just noticed you don't see that =O)
The only strange thing I noticed is that as soon as I streaked over the point in the first picture always a little dot appeared and disappeared shortly after I finished streak... but I doubt that'll do nothing but confuse you
and it's not 100% that it's caused by dark altar. Dark altar is just a skill that might be worth looking at =P
Edit: Just took this screen in a game with Defiler,Neph,Garg and Firelord
sooo no it doesn't seem to be (only? still dunno if it does but don't think so =P) dark altar
Edit2: but it's probably from the ud because once I had this when playing against elves and now against creeps =o
just a thought... corpse trap leftovers?