the buff duration is shown in ticks I belive. 
so duration of 30 means 30 ticks which are 180 seconds, which are 3 min. 
So easy way to calcualte them X ticks/10= X minutes 
 
the duration formula - thats a hard one =) 
I know this has to do something with stacking, but i let devs explain this one in detail =) 
 
Otherwise - great work right of the first atempt! Keep it up! 
 
on 2 and 3 - perhaps you want to to take a look at the "german" editor for the icons? 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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