**Recent price action and the looming Mega Forces Tins release are the main drivers behind the 67.5% market-implied odds that the Mega Dragonite ex Special Illustration Rare (#290 from Ascended Heroes) will close lower on August 31.** The card peaked near $875 earlier in the summer but has since cooled to the $650–730 range, with multiple recent TCGPlayer and eBay sales reflecting a roughly 12% drop over the past 30 days. This pullback follows the initial post-release hype for the Ascended Heroes set (January 2026) and aligns with typical secondary-market behavior for chase SIRs once supply stabilizes and collector interest shifts. The key near-term catalyst is the August 28 drop of the Mega Forces Tins, which include fresh alternate-art Mega Dragonite ex promos alongside Mega Darkrai ex and Mega Zeraora ex. Traders anticipate that the new product influx and any associated promo hype could cap upside or even pressure the existing SIR price in the final days of the month, especially with the resolution date falling just three days after the tin launch. Historical patterns for similar promo-tied chase cards show short-term volatility but limited sustained gains once additional supply hits the market. Overall, the consensus reflects a cooling trajectory and the timing of the tins more than any fundamental shift in the card’s long-term appeal.