Auras

1.) Since the auras reserve a percentage of the maximum mana (with the exeption of clarity), is it only possible to cast 3 auras (1x 60% + 1x 40% + clarity) or will the second aura only reserve a percentage of the remaining maximum life?

2.) What happens if you cast an aura with bloodmagic while using "chaos inoculation" (max. life = 1)?

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1.) Since the auras reserve a percentage of the maximum mana (with the exeption of clarity), is it only possible to cast 3 auras (1x 60% + 1x 40% + clarity) or will the second aura only reserve a percentage of the remaining maximum life?

Assuming no aura reservation modifiers, you can cast at max one 60% and one 40%. You can't cast an aura an only use up what you have left, you have to have that much mana left unreserved. That said, the Reduced Mana gem and various items and passive nodes let you run a lot more than 3 auras.

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2.) What happens if you cast an aura with bloodmagic while using "chaos inoculation" (max. life = 1)?

You can't.

thanks :)