(Check with your local game store for how to participate with in-store Murders at Karlov Manor events.) Plus, as alluded to elsewhere (and a tip for sleuths out there), the Murders at Karlov Manor Bundle is a product that also contains clues for one of the 13 puzzles in the RavnicaDetectiveAgency.com event
These cards also save you from needing to dilute your deck with quite so many of those one-use flicker spells, so you can play more actual staples (which just happen to also be good flicker targets)
My general rule of thumb is that for every two MDFC lands in my deck , I cut one land
+1/+1 Counters We love giving buffs to our creatures, so removing them seems like a terrible idea
Their names are fairly generic, but Id expect more versions of the Medallions before the Crystals get their first reprints
Averna, the Chaos Bloom Averna is a Temur commander that enables cascade, a mechanic that allows you to play nonland cards from the top of your library for free