It won't. So no atk up lrg gene on silver. All skills with the same name won't stack. All element atk up doesn't stack with single element atk up. Single Element atk up boosts single element better than all element atk up.
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you can set to whatever you want.
I know i can put 80 in all iv with your editor, but i want to know maximum time we can break an egg in game. =)