@markrosewater recently answered an ask about teaser cards in sets and I’ve been thinking about it ever since. What I’m referring to as a teaser card is a card the makes reference to something that’s in the pipeline but which hasn’t been printed yet. It’s a card (or cards) that will come in a later set or block.
I believe there’s a right and a wrong way to do these. Read on to see how Wizards blew it in the past and find out if Hour of Devastation will repeat the failure or deliver on the promise.