Why are ascension items called mats by some?

General Discussion
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Okay silly question, but it bothers me not knowing. Why do people refer to ascension items for heroes as “mats”? If it is an acronym I could see “Minimum Ascension [?]” but still don’t get it.

Thanks

2

For an answer, please see:

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A post was merged into an existing topic: The E&P Jargon-Pulverising Fictionary