tmzerozero asked: Is the rare to mythic rare ratio still the same for ixalan? Having a normal rare sheet plus 10 double faced rares, but only 15 mythics would imply that there is a lower chance to open a mythic than normal

It’s slightly different. Normally, the chance of getting a particular mythic rare is 1 out if 121. Due to the ten rare DFCs, the chance of getting a particular mythic rare in Ixalan is 1 out of 141. There are twenty extra slots because rares appear twice as often making ten cards fill twenty slots.