You can only use this effect of "Ashoka Pillar" once per turn
Like most Pokmon cards, the value of Pelipper 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 (Arceus)
As more collectors become aware that Japanese cards are often better centered and higher quality, demand has increased, pushing prices up
You need to be in at least three colors for this to become mana-positive
Outside of the very popular Mox Amber from MTG The Brothers War set, here are a few other notable cards that you might want to keep an eye out for: Ragavan, Nimble Pilferer Multiverse Legends from the recently released March of the Machine Set Numbered 1/500 This card, which was serialized #1, sold for an astounding $6,500 just a few weeks ago
The honest answer changes by buyer type