Like most Magic: The Gathering cards, the value of Ruinous Path 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 (Battle for Zendikar Promos)
Certain strategies may actually suffer because a playset of lifegain creatures that draw more cards, like potential removal, arent really a joke
This completely sidelines the need for movement-based supporters like Leaf, making it an incredibly self-sufficient attacker
Pity there are so many counterfeits to wade through
For example: Kaldra Compleat and Serras Emissary is $1.50 more at $8.49 and $5.99, respectively, and Murktide Regent costs the same no matter the version ($23.99)
Pidgeot ex is classified as a 2-Star Shiny card in the Extradimensional Crisis set