Normally, I have a couple paragraphs of flavorful introduction here related to the plane we're visiting. But on Ikoria, I'm RIDING A FLYING SHARK, so yeah, just go on and read the details. Wheeee!
As usual, you'll be able to find the Comprehensive Rules here on our website, and Oracle text updated in Gatherer—at this time, one or both of those might not be updated just yet, so I'm describing a general truth here. Keep in mind that this article was written before the rules changes were finalized in editing, so there may be minor deviations from what I describe below.