XY Goldmine: 10 Underrated Pokémon Cards Set to Skyrocket in Value

Catch These Kalos-Era Cards Before Legends: Z‑A Blows Them Up

As the Pokémon TCG world braces for the hype surrounding Pokémon Legends: Z‑A—a return to the Kalos region and Mega Evolutions—collectors are starting to rediscover the overlooked treasures of the XY era (2014–2017). This era introduced stunning full-art designs, powerful Mega Evolutions, and fan-favorite characters that are still shockingly affordable.

From fierce legendaries to game-changing Trainers, here are 10 standout cards you can snag right now and many under $100—before Kalos comes roaring back and prices follow suit, you can pick these up from TCGPlayer.

🔥 Top 10 XY Pokémon Cards to Grab Now

🔹 Dragonite ex – Evolutions (Ultra Rare, 106/108)
A majestic full-art with intimidating flair, this Dragonite ex is a sleeper pick from the 20th-anniversary Evolutions set. With Mega Dragonite teased for the future, this card’s current low price won’t last long.

🔹 Mega Blastoise ex – Evolutions (Ultra Rare, 22/108)
Charizard steals the spotlight, but Blastoise fans know the truth. With vibrant Japanese text and explosive artwork, this Mega Evolution is a nostalgic beauty still selling for under $30.

🔹 Professor Sycamore – Steam Siege (Ultra Rare, 114/114)
One of the earliest full-art “Professor’s Research” cards, Sycamore holds lore-rich Kalos value. At under $9, it’s a no-brainer for fans and collectors alike.

🔹 Skarmory ex – XY Base Set (Ultra Rare, 145/146)
A fierce Johto bird gets a sleek full-art treatment. Undervalued and under $11, this early XY-era ex card could quietly become a collector's gem.

🔹 AZ – Phantom Forces (Ultra Rare, 117/119)
Mysterious and lore-heavy, AZ's first card already has buzz thanks to Z‑A speculation. Don’t be surprised if this one spikes fast.

🔹 Gardevoir ex – Steam Siege (Secret Rare, 116/114)
Featuring a lineless art style and Yveltal cameo, this Gardevoir card is pure beauty. Still under $85, it’s the kind of secret rare fans will regret skipping.

🔹 Xerneas ex – XY Base Set (Full Art, 146/146)
One of Kalos’ legendary mascots, Xerneas ex boasts a rainbow glow and serious collector appeal—yet somehow remains affordable.

🔹 Gyarados ex – BREAKpoint (Secret Rare, 123/122)
This iconic secret rare showcases Shiny Gyarados, Greninja, and Manaphy in one scene. Hovering around $130, it’s pricey—but worth every penny for long-term value.
💡 Budget tip: The Ultra Rare Gyarados ex is a great-looking alternative around $54.

🔹 Volcanion ex – Steam Siege (Secret Rare, 115/114)
Drawn by Mitsuhiro Arita, this rare card features the mysterious Mythical Pokémon. If Z‑A explores Volcanion lore, expect this gem to erupt in value.

🔹 Lysandre – Flashfire (Ultra Rare, 104/106)
Before “Boss’s Orders,” there was Lysandre. A bold, villainous Trainer card with gusting power and rich narrative history—currently only $25 and a worthy grab.

🎙️ MainEvent.News | Backstage Take

Collectors know the drill—when a new game revisits an old region, the card market follows. Kalos is back in the spotlight, and the XY era’s forgotten stars are getting a second chance to shine. Whether you’re chasing dragons, professors, or villains, these cards blend lore, beauty, and opportunity. Snag ‘em while you still can.

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Disclaimer: MainEvent.News is not affiliated with or compensated by TCGplayer. We’re simply highlighting valuable Pokémon card deals we think collectors will appreciate. Prices and availability are subject to change.