digimon card game starter deck venomous violet Tactics like never before Devimon - Starter Deck 06:

Aside from being an absolute monster of a card-draw engine, Rhystic Study allows you to annoy your opponents into submission

By adding a way to keep Shalai safe, like Lightning Greaves, you can have a board that only falls to board wipes and there are plenty of tools to stop those, too, from Teferis Protection to Avacyn, Angel of Hope

You can only Special Summon "Red-Eyes Alternative Black Dragon" once per turn this way

Furthermore, such an addition is also unlikely to be a priority for the developers , as the game already enjoys a steady stream of limited-time events, all of which carry their own rewards for participation