Phased



Phased is a status that allows units to pass through other units, ignoring collision size. Phased units can freely walk through any other unit, including wards, but excluding buildings. Other units can also walk through a stationary phased unit as if it is not there.

There are two different kinds of phased movement, the more common kind which only allows pathing through units, and the rare kind which allows the unit to walk through anything, including buildings, cliffs and trees. The latter is more commonly referred to as unobstructed movement. Flying movement is similar to phased movement, with only very small differences, one being that flying units do collide with each other, pushing each other away, and the other being flying units hovering a certain distance above the ground.

Sources of regular Phase
These abilities provide phased movement which allows moving through units.

Permanently Phased
The following units are permanently phased:
 * Beetles
 * Fire
 * Healing Wards
 * Observer Wards
 * Phoenix Suns
 * Proximity Mines
 * Psionic Traps
 * Remote Mines
 * Roshan
 * Sentry Wards
 * Spin Webs
 * Stasis Traps

Sources of unobstructed movement
These abilities allow affected units to path through buildings, cliffs and trees, on top of allowing them to path through other units.

1 Meat Hook and Nether Swap grant unobstructed pathing to units put onto cliffs until they leave the cliff or for up to 5 seconds, whichever is shorter.

2 Reflection and Haunt illusions have unobstructed pathing.