rhydon pokemon card price - 112/165 - Pokemon 151 - Reverse Foil Colorless Retreat Cost Rhydon Price & Card Details

It presents some hoops to jump through to be a pretty good pump spell, deliberately designed to not go berserk with changelings by making Brushwaggs illegal targets

Sure, you can combo it with cards that put extra counters, but if you can dedicate that much resources to one card, you can dedicate those resources to other ones that win you the game on their own, rather than relying on a combination of cards

Beyond that, as with all modal spells, versatility and freedom of choice are paramount, as this spell allows you to also wipe the board (of creatures with toughness up to 3, that is) or destroy multiple artifacts if they're causing you problems

The Twinflame gets an additional bonus since Fiendish Duo only doubles the damage dealt to players, while the Dragon is all damage done to opponents and permanents