What is the rarest card in Pokemon battle styles?

What is the rarest card in Pokemon battle styles?
The 10 Most Expensive Pokémon Cards in Battle Styles

#1: Tyranitar V (Alternate Full Art)
#2: Rapid Strike Urshifu VMAX (Alternate Art Secret)
#3: Single Strike Urshifu VMAX (Alternate Art Secret)
#4: Houndoom (Secret)
#5: Phoebe (Secret)
#6: Phoebe (Full Art)
#7: Empoleon V (Alternate Full Art)
#8: Cheryl (Secret)

The 10 Most Expensive Pokémon Cards in Battle Styles
  1. #1: Tyranitar V (Alternate Full Art)
  2. #2: Rapid Strike Urshifu VMAX (Alternate Art Secret)
  3. #3: Single Strike Urshifu VMAX (Alternate Art Secret)
  4. #4: Houndoom (Secret)
  5. #5: Phoebe (Secret)
  6. #6: Phoebe (Full Art)
  7. #7: Empoleon V (Alternate Full Art)
  8. #8: Cheryl (Secret)