The impending August 28 release of the Mega Forces Tins—featuring fresh alternate-art promos of Mega Dragonite ex alongside Mega Darkrai ex and Mega Zeraora ex—stands as the dominant near-term catalyst pressuring the Special Illustration Rare from Ascended Heroes downward. Traders view the added supply and collector focus shifting to the new promos as likely to cap or erode demand for the January 2026 SIR heading into month-end. Recent TCGPlayer and secondary-market data already reflect softening raw prices in the $650–$730 range, consistent with broader post-hype cooling for Ascended Heroes chase cards. While Dragonite’s enduring popularity and any last-minute collector buying could blunt the drop, the timing of the tins relative to the August 31 resolution date anchors market-implied odds toward a decline.