have it so they can not be bought before 5 mins in.
otherwise you are going to have the problem of jungles never being able to do anything.. oh what game starts you get 5 wards in my jungle for free well crud,hello mass easy invades/steals.
Except that the trinkets have 50% uptime, so if you even remotely time them, it's free ganks 23/7...
If you mean actual green wards, well get a pink that will stay there forever (and cost 5g less than green if you spot a ward) or the red trinket...
What?
... Friend, I have no idea where you came up with this scenario but Trinkets can't be used until 1:30 at the earliest and you are limited to 3 wards in inventory max per person so the support doesn't have the means to spam ward after an invade if they expect to do anything bot lane...
And no wards on first buy...? Uhm... that just removes all strategy and makes the first 5 minutes just skill and luck since you'll have pretty much no knowledge of where the jungler is and totem wards don't last long and a sweeping lens will remove them anyway.
