The Release Event set for OP-16 contains only the 75 common and uncommon cards from the full OP-16 The Time of Battle set. Every card has a Release stamp but features the same art as the main release.
Each Release Event pack contains two random cards. Every participant in the OP-16 Release Event was given one pack. The packs were available from June 5, 2026 with the main set releasing on June 11, 2026.