How much increase in power do the gems give?

Question

For example I use giga impact with a normal gem how much stronger does it become?

Answer 1

It multiplys by 50%

Comments

If something is multiplied by 50% (0.5) it is basically halved. So what you really mean is it gets 50% added.

Sorry I can't help correcting people.

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Hey it's nerfed to 1.3 times or 30% buff in the attack.