Siren’s Song is a two-energy spell from Riftbound Radiance, the fifth set of Riot Games’ League of Legends trading card game, released on 23 October 2026. It is a Reaction that moves an enemy unit after that unit has already moved this turn, which opens new ways to disrupt your opponent’s plans and shape combat. The effect immediately recalls a card banned in Set 2, Fight or Flight. Is this spell strong enough to make an impact on the Riftbound meta?
What Siren’s Song does
| Siren’s Song | |
|---|---|
| Type | Spell · Reaction |
| Domain | Purple (Chaos) |
| Cost | 2 energy |
| Set | Radiance (RAD 098/167) |
| Text | Reaction (play any time, even before spells and abilities resolve). Move an enemy unit that moved this turn. |
A familiar effect with a new twist
Fight or Flight allowed players to move a unit from a battlefield back to its base. It was often used to punish opponents who had already spent resources to win a combat, or to save one of your own units from an unfavourable fight. Its ability to be hidden also made it very flexible, letting players protect important units after scoring.
That is why it is a little surprising to see Riot print a card with a similar effect. But Siren’s Song comes with important differences. It always costs two energy, which makes it less flexible than a hidden Fight or Flight, and it only targets an enemy unit that has already moved. In exchange, it has unique applications of its own.
How to use Siren’s Song
Reaction speed. The first big advantage is timing. You can play Siren’s Song in the middle of combat to blank a powerful spell like Switcheroo by moving the enemy unit out of the fight.
Forcing a combat. Another use is moving an enemy unit to a different battlefield, to force a favourable combat your opponent did not plan for. Draven looks particularly promising here: moving a unit away from one battlefield and into another could let you win two separate combats in the same turn.
Punishing escapes. Finally, Siren’s Song punishes opponents who try to get out of a bad spot. If an enemy unit retreats to its base, or leaves combat with Flash or Ride the Wind, you may be able to move it right back onto a battlefield. You can even use it to deny a point when your opponent tries to score an empty battlefield.
Will Siren’s Song become a staple?
Siren’s Song looks like a very strong addition to Radiance. Its two-energy cost makes it less flexible than Fight or Flight, but reaction speed gives it several powerful use cases.
Purple decks that rely on combat tricks and battlefield control stand to gain the most. Draven is the obvious candidate to take advantage of a card that manipulates combat this way.
Riftbound Radiance in our vending machines
Radiance boosters go into the BoosterStop machines on release day, like every new set. Check the live stock of the Geneva machines before you go, and find every Riftbound product we carry on the Riftbound page. The next set, Legacy, is due on 29 January 2027: all the dates are in the TCG release calendar.
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