Hey all, I want to ask - when a buff has been casted on an ally, let's say 30% INCREASE DEF, if another champion also casts this buff, does this mean that the allies have a total of 60% INCREASE DEF buff or is does it stay 30%?

In other words, do buffs on allies stack or the highest one prevails?

Thanks.

They don't stack. The same is when you have lesser debuff on your opponent and you manage to apply bigger version then the bigger version take place. But they don't stack.