Well I'm making a maze and used this trigger I found on a tutorial.
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Events
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Time - Every 0.05 seconds of game time
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Conditions
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Actions
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Unit Group - Pick every unit in (Units owned by Player 1 (Red)) and do (Actions)
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Loop - Actions
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If (All Conditions are True) then do (Then Actions) else do (Else Actions)
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If - Conditions
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(Terrain type at (Position of (Picked unit))) Equal to Barrens - Desert
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Then - Actions
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Unit - Move (Picked unit) instantly to (Center of Region 017 <gen>)
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Else - Actions
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Custom script: call DestroyGroup(GetLastCreatedGroup())
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