A long-standing joke is that having the ability "must attack each turn if able" makes a creature more powerful than it would otherwise be
For XR, Meltdown can destroy every artifact in play that's mana value is the X paid or less
So, if you have three mana and nothing to do with it, you could roll the planar die three times
On top of that, it has a feeling of Syr Konrad, the Grim, which is eternally popular in EDH
Artist AKIRA EGAWA designed this breathtaking card, and it really is stunning
This expansion also introduced the various forms of the Legendary Pokemon, Ogerpon, with the Teal Mask Ogerpon ex becoming a staple for a number of meta decks, including Regidrago VSTAR and Raging Bolt ex