Like most Magic: The Gathering cards, the value of Ragefire 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 (Ravnica Allegiance)
Is Splice Good
Appearance aside, Articuno's price is heavily influenced by condition, as the market price is only as high as it is when the card is in NM condition
I still have the Mewtwo, which can be identified from a mile away by a very deep and long scratch on the holo illustration
At the top of the collector's wishlist is the Special Illustration Rare for Charizard ex
Whenever a creature with Squad is played, its player may pay the cards Squad cost any number of times, creating token copies of that creature equal to the number of times the cost was played