I fill in the ATK/HP field of permanents/spells for the sake of it.
I don't know why.
A creature that produces darkness quanta?
...Devourer.
Had to think about that one.
I was thinking "Weird oETG things, and other cards that produce darkness quanta that might be added to that."
The upped, considering it steals quanta... Ehh, I don't know. Could be reduced, I guess... Not by much.