How many squares does this aura occupy?
2
What does 'passes through' mean?
Moving through in any way, whether willingly or by force. For example, a unit moved by Grapple Shot or Pudge Butcher would take damage from the Wall of Fire. Note that a teleported unit doesn't pass through borders, and thus wouldn't be affected.
Does this affect the corners of the border? (e.g. Airborne units moving diagonally)
No. 'Border' means adjacent squares, not including diagonals.
What if this is animated by an Enchantress?
It can move, but units are not passing through the Wall of Flame due to its own movement. After moving, its effect will apply between the two squares it occupies.
Market
$0.09
Low
$0.01
Median
$0.15
