I read your EDIT: but now I think that needs to re-edit.. I'm really confused of why.. but
(Number of living Wisp units owned by (Triggering player)) Greater than or equal to 2
makes the following actions not to activate.
wisp
Events
Unit - A unit enters Wisp <gen> works
Conditions
(Unit-type of (Triggering unit)) Equal to Wisp works
Actions
Game - Display to (All players) the text: hej works
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
(Number of living Wisp units owned by (Triggering player)) Greater than or equal to 2 doesn't work?
Then - Actions
Unit - Remove (Triggering unit) from the game doesn't work
Game - Display to (All players) the text: hej 2 doesn't work
Else - Actions
Do nothing
I'm still looking up on why..


(Tell me if you figure out why ^^)