I appreciate you have the start of a Reward Distribution page:

https://magic.wizards.com/en/mtgarena/drop-rates

Could you republish on The /drop-rate page to include what are the expected odds just of Special Guest (SPG) hits when you open MKM and OTJ packs.

Moving forward, please publish the isolated SPG drop chance. This is to fulfil your legal requirement to disclose the odds of gambling when opening up chance based packs (which can be purchased for money).