For a larger collection, you may want to break it down even further (creatures, noncreature spells, and lands for example) if you are organizing to locate specific cards
With such a versatile and simple effect, it will remain to be a staple in Red decks as long as Bandai continues to print scarlet-colored cards
As usual with effects that force a creature to attack if able, it has to actually be able
However, if you hold on to those Crystals and gain a hundred or so more, you can unlock the Premium Pass which grants more Crystals, Credits, packs, individual cards, and more
However, the player can additionally discard up to three Grass-type energies to deal 50 more damage for each one