You do not know, but you can infer given their actions at the table
Lines of 45 minutes or more are being reported at some locations, which tells you two things: the card is drawing real foot traffic, and supply is getting hit hard
There are 61 extended-art cards in OTJ: 50 rares and 11 mythic rares
While this is technically interaction, it puts all the control in the hands of your opponents as they get to choose what to sacrifice and discard - they will probably choose the options which are best for them
3 Complex Rules Issues Can Derail Gameplay Both MTGO and Arena can dodge the issue of complex rules just fine, but when playing paper Magic: The Gathering , figuring out complex rules cases can be a hassle, especially if there isn't a rules-savvy friend on hand to help
with the Quarter Century Bonanza