Referring to my previous question and its comments, I want to know which abilities/spells/items supplement hero vision at night, day and both combined?
Most of this items/skills can only be used to get temporary vision of small areas,nothing really should extend the default day/night vision of your hero.
Only heroes/items currently in dota 2 are listed.
Invisibility,omnislash,infest and other spells that only displace/change the position of your hero's vision are not included,on the other hand gaining access to inaccessible high ground is included since it prolongs your vision radius significantly and makes ambushes easier even tho you can move.
Note while controling neutral creeps.
This should be pretty much everything, I tested the few that I wasn't sure on but I probably hit most.
Spells that provide temporary flying vision:
Spells that give vision as they traverse/land:
Spells that give vision of affected targets:
Items that provide vision:
I've ignored summons as all summons will of course grant vision, and I've ignored spells that move you along with them, as it's you providing the vision, not the spell. As you can see, most support heroes have a spell that provides vision of an area. This is to allow them to counterward more easily.