While this doesnt provide a whole lot in the way of information about what the drop entails, we have a couple of threads to go off that can guide speculation
I envision using cards like [casthaven]Aethersnatch[/casthaven], [casthaven]Spelljack[/casthaven], [casthaven]Commandeer[/casthaven], or [casthaven]Knowledge Exploitation[/casthaven] to have a stronger suite of spell interaction
The lid goes on via a convenient magnetic mechanism which makes it simple to pop on and off but holds strongly and securely when not in use
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Also, Mark Rosewater, their head game designer, is someone who really loves the game: Besides leading Magic s design, he also runs polls everyday on twitter, releases two podcasts every week, writes an official article every week and answers lots of questions on any free time he has