The Final Fantasy Universes Beyond set chose to represent crystals as a new artifact cycle, which combine useful cost reduction with powerful passive and activated abilities
Entreat the Angels, Starnheim Unleashed, Finale of Glory, and Decree of Justice all reward you handsomely for spending a lot of mana on them
Every deck that can run it, SHOULD run it, as the card is simple, incredibly effective, and allows you to get your game plan moving before your opponents can even react
There will be two new frame design changes, for legendary cards and for the Saga mechanic
I play this in a zombie-themed deck where menace helps push through hoards of the undead
Developed Brain, this cards ability, allows players to look at the top three cards from their deck when they play it, before putting one into their hand and the rest back in whatever order they like