Vaal Fragment Changes in 1.2.4d

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HeaT1 wrote:

"We added the ability to turn unwanted Fragments into new high-level corrupted areas, so that they could be rerolled until they turned into either a better fragment or a Vaal Skill Gem"

i must have missed the patch notes on this? how do you reroll vaal fragments themselves into a vaal gem? or does chris mean using the fragment to spawn a corrupted area is like a reroll because unwanted fragments now yield the possibility of a vaal gem / better fragment?

-HeaT

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Tomanomanous wrote:

Do maps with more than 1 boss (Bazaar for example) have a chance per boss, a chance from only one boss, or no chance to drop. I ran a twinned arcade (4 bosses) and not one dropped something vaal, which has been very inconsistent with about 50% drop rate in every other map. Bazaar's 3 bosses didn't drop anything for me either, so between those maps the drop rate has now fallen from 50% to 25% for me, do I assume its just that low or is there something else going on?