Magic has had what are called "modal double-faced cards" before that allow you to cast either side from your hand, but this is the first I know of that also allows you to pay a cost to flip it while the front side is already in play - in this case, you can play Peter Parker for two mana, and then pay four more on a later turn to have him transform

Advanced Search Sets Random Syntax Aisling Leprechaun Alela, Artful Provocateur Alela, Cunning Conqueror Animating Faerie Archmage of Echoes Argothian Pixies Argothian Sprite Barrow Naughty Bitterbloom Bearer Blightwing Bandit Bog Naughty Brazen Borrower Briarberry Cohort Chancellor of Tales Charmed Clothier Cloud Sprite Cloud of Faeries Cloudseeder Copy Catchers Crimestopper Sprite Dewdrop Spy Diamond Faerie Dimir Strandcatcher Dream Seizer Dream Spoilers Dream Thief Dreamspoiler Witches Emrakul's Messenger Eye Collector Fae of Wishes Faerie Artisans Faerie Bladecrafter Faerie Dreamthief Faerie Duelist Faerie Formation Faerie Guidemother Faerie Harbinger Faerie Impostor Faerie Invaders Faerie Macabre Faerie Mastermind Faerie Mechanist Faerie Miscreant Faerie Noble Faerie Seer Faerie Snoop Faerie Squadron Faerie Swarm Faerie Vandal Fencer Clique Final-Sting Faerie Fire Sprites Flitterwing Nuisance Flitting Guerrilla Glamer Gifter Glamer Spinners Glamermite Glen Elendra Archmage Glen Elendra Guardian Glen Elendra Liege Glen Elendra Pranksters Glitterflitter Groundling Pouncer Guildpact Informant Halo Forager High Fae Negotiator High Fae Trickster Hushbringer Hypnotic Sprite Il Mheg Pixie Illusion Spinners Indigo Faerie

Youll most likely be ahead of the curve against your opponent no matter what they choose
These requirements have made trading near impossible, likely in an attempt to get players to buy booster packs instead
The Pokmon card Castform Rain Form 49/146 of Legends Awakened also exists in Reverse version
Pokemon TCG Pocket has become a hit with fans of the beloved monster-capturing franchise, and it looks to be keeping its momentum going