Kai'Sa, Rebel (K/DA Special Art Card) from Radiance (Foil) fell 14.9% to $25.29 on Oct 29, 2026, the biggest one-day drop among Riftbound singles priced $20 or more, per TickerMint.
Source: TickerMint (tickermint.cards), Oct 29, 2026. https://tickermint.cards/wire/2026-10-29-riftbound-top-decliner