The "Number" then transforms into its full form (depicted in the card artwork) through various means
Reprodocus is stellar at helping with this as it can help get you a type on the field that you might need to keep your opponent out of.
As Jaden celebrates his victory Aster admits that he lost today, but that it doesn't mean that his "Destiny Heroes" had lost, only that his abilities are imperfect
Marisi, Breaker of the Coil adds to the chaos when it goads your opponents creatures: This Naya commander is arguably the very best goad commander in all of Magic
It does seem as if The Pokemon Company go all out in terms of the artwork for these cards, which are always beautiful
If you play her, I highly, highly, highly recommend vehicles with ETB abilities, for example Imposter Mech in specific, as a clone vehicle she can crew by herself AND that can get you any opponent's etb effects whenever you blink it itself