Did you know in team fight when krobelus die while has activated ulti, all teammates who are near that fight will get hp healing. That apply even for hero who was in fight and away from fight in that moment.
43:33-43:40
http://dota.eurobattle.net/la/forum/index.php?action=gameinfo;sa=game;gid=573654343:40 [All] trider killed Achaja
43:44 Achaja [All] lol
43:50 Achaja [All] wtf was that
43:55 Achaja [All] why you got 800 hp
43:58 trider [All] i have no idea
44:12 trider [All] in second i got hp
44:16 Achaja [All] y
44:35 trider [All] dont know if krobe have some item for heal
44:57 Achaja [All] hmmm he didnt?
45:01 trider [All] nope
Focus earth spirit and spectre. Spectre had 50 hp and after krobelus died, spectre had 700+, also other teammates had that heal. Red aura is visible for short time.