I plan on farming Act 1 for a while, as I've done so much Act 3 farming I'm quite bored with it.

I've added Fields of Misery to my farming path once I get 5 NV stacks, so I can get my first key.

However, once it drops, will I be able to continue farming more Act 1 keys? I want to be able to use 3 Infernal Machines at once, to ensure that I get one of each combination of bosses, but I'm not sure if I can have more than one key at a time.


Yes, you can get multiples of the same key before you craft the Infernal Machine. Keys are stackable, though I'm not sure what the maximum stack size is.

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    at the minimum they stack to 100 like gems I believe. The inferno machines are stackable too. – l I Oct 17 '12 at 22:28

You can only open one portal per game though, guess they didn't want you to be able to force all 3 types to open like with the sub-uber portals in D2.

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    This is completely wrong. You can INDEED open all three portals in a single game. – Frank Oct 22 '12 at 2:19

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