Korrigiert

every 2 seconds:
    loop players:
        loop-player has permission "skript.shadow"
        light level at loop-player is smaller than or equal to 5: # heal the player from light level 5 downwards
            heal the loop-player by 0.5 hearts
            #message "<light green>You are in the shadows!" to loop-player
        light level at loop-player is smaller than or equal to 3: # extra healing from level 3 and downwards
            heal the loop-player by 1 hearts