If he and the Chocobo attack together after a landfall, then he brings the Chocobo up to very high stats. Then we have the power creep: Chocobo Racetrack which puts Zenikar's Roil to shame
As of this writing, it is unknown how many of these cards have been opened, as determining a price for them is extremely difficult
Certainly, if youre playing something in the category of Infect or Amulet Titan, then a good draw with one piece of graveyard hate ought to allow you to win the race
You can also take it to a local game store or card shop and see if theyre interested in buying it from you
For example, versatile attackers like Arceus VMAX could sustain large amounts of damage while allowing players to buff their Pokmon with energy cards
This period was based around Tag Team Pokmon-GX, cards that featured two or more Pokmon teaming up on a single, powerful card