Like most Magic: The Gathering cards, the value of Epic Proportions depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Arena Beginner Set)
Happiny [Reverse Holo] #161 (Pokemon Unbroken Bonds | Pokemon Cards) prices are based on the historic sales
This set is the culmination of at least four years of storytelling, design, marketing and innovation
Fire decks would have to play Giratina, Team Yell Grunt, or Crushing Hammer to try to remove the energy, but since Welder based decks can't always consistently find those cards, they can still struggle to remove the energy
That seems very suspicious to me
Arena (Fight Land) The first fight card is still one of the best