A wave of pop culture is hitting the new Riftbound expansion! HEARTSTEEL, the virtual boy band from League of Legends, is setting the Radiance set on fire!
It’s official! Riot Games has unveiled one of the most exciting collaborations for the fifth Riftbound expansion: Radiance x HEARTSTEEL, launching on October 16th at Cartes Léo.
Clues have been popping up on social media over the past few days, and today Riot Games confirms it: these cards will be released in the Overnumbered format, making them truly exceptional collectibles. Whether you’re a hardcore strategist or a passionate collector of rare finds, this announcement is taking the hype to the next level!

The 6 Featured Members
HEARTSTEEL never does things by halves, and this expansion is no exception. It introduces six Overnumbered cards (ranging from 178/167 to 183/167) illustrated by Studio Luscina, along with special signed versions.
- Ezreal, Dashing (Piltover)
- Sett, Kingpin (Ionia)
- Yone, Blademaster (Ionia)
- K'Sante, Courageous (Shurima)
- Aphelios, Exalted (Mount Targon)
- Kayn, Unleashed (Ionia)

Why is this such a big deal?
As a retailer, we love seeing the TCG industry explore new horizons. This collaboration brings a fresh angle to a company that is constantly diversifying and blending its worlds. K/DA, the iconic League of Legends girl group, has also been announced as part of the Radiance set. These collaborations tick all the boxes to generate intense hype around the set's release:

A powerful crossover
HEARTSTEEL and K/DA reach an audience far beyond the usual circle of card game players. Art and music enthusiasts, as well as fans of the League of Legends universe, will find this the perfect entry point to try out the game.
An incredible opportunity for collectors
With rare overnumbered cards and signed cards in the mix, these pulls are likely to become highly sought-after on the secondary market.
Refreshing the gameplay
Beyond the visuals, the Radiance expansion introduces new mechanics that will bring a fresh feel to in-store matches.
- Deploy: Allows you to play Gear cards directly onto the battlefield, even if you don't control it. The gear provides on-site effects until an opponent takes control of the zone, at which point the gear is destroyed.
- Show Off: Grants a card an additional effect if you reveal a specific card from your hand when playing it.
- Disarm: Reduces an enemy unit's Might when your own unit attacks. Disarm effects stack if applied multiple times.

Join us at Cartes Léo for the Pre-Rift event!
The set officially launches on October 16! Our Pre-Rift event will take place on Wednesday, October 21, by popular demand from our current player base. It’s the perfect time to get your hands on your first Radiance booster packs and hopefully pull one of those famous HEARTSTEEL cards!
We look forward to welcoming you to the shop!
Which HEARTSTEEL member do you dream of adding to your collection first? Come by the store and let us know!