For example, during a Time Spiral Remastered Limited event, you can't add Relentless Rats from your personal collection.
If Shadowmoor had a "colors matter" theme, it would work with the Lorwyn cards as they all naturally would have colors
On the flip side of the hypothetical card effect above, I question a card like Night Teleporter, which does something pretty lame (in most cases) upon a heads flip
It also means that, if an elf deck is running enough lands like Cavern of Souls or Secluded Courtyard, the Werefox is effectively free to splash
In fact, this is the second event the game is running in its first week
The game's Sphere Grid leveling system uses visual markers to gain abilities and stats, and I knew I could do that physically with +1/+1 counters and keyword counters