There are scheduled to be around two months between the release of Triumphant Light and the game's next expansion, A3, leaving plenty of time for things to be chopped and changed
I do have a small binder of cards that I would hold onto if I ever quit playing though, thats pretty much my real collection, everything else I am willing to offload
Ruthless Technomancer is a nice companion card if you enjoy noodling around in the graveyard, and though Revel in Riches and Black Market are hugely popular, they paint a massive target on your back and often end up less impactful than curving out with a creature and keeping on the pressure
Previous double-faced cards like those in the Innistrad sets can only be played on the front side, and then transform to the back side when specified conditions are met
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Do-It-Yourself Seraph What does it mean it "has the text box"