Can the Protoss Mothership Mass Recall Allies' units?

Question

If so, there's a wicked opportunity in 4v4 to mothership rush to an enemies base and recall 400 units into his base!!!

Answer

Yes it can. Here's an excerpt:

Mass Recall teleports a group of friendly Protoss units within a 6.5 radius of a targeted area directly to the Mothership's position. Such a teleportation can occur from across the map

It's a really useful ability, however the problem is you need a mothership to use it. Considering it's such a late game unit, it normally doesn't show up in a match, although it can be game changing if it does.

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