That works well in conjunction with Gholdengo exs attack, Make it Rain which only costs one Metal Energy to use
So if you see something like Emeritus of Ideation's M 0045, that final M letter means you've got yourself a mythic
The Final Fantasy set contains a bunch of regular Traveling Chocobo cards as well, each of mythic rarity but featuring a different color from Final Fantasy VII , including yellow, red, blue, green, and black
Aang is following the exact same pattern
This one is a bit of trouble to set up and is a straight dead card in topdeck mode and laughable against swarms of aggressive Boros and Gruul options that will run over a player trying to get this attached and online for a potentially useless return
The issue is without something like Mardu Ascendancy this is triggering from hardly anything in your deck at all