When a trigger spawns units, are the units neutral? Or, are the units aligned to the player that triggered them? I know that I can change the alignment of the spawned creatures with another trigger effect, but I'm curious about their initial disposition.
What happens when I spawn units into a square that already contains units? Does a battle occur?
Triggers can spawn heroes. I'm guessing the heroes are level 1 with a random name. Is this correct?
When a trigger is only available to one player, and it is visible on the map, is it visible to every player? Or, is it only visible to the player who can activate it?