8gon updated the rewards for A Timeless Voyage back when M21 rotated out of standard. The event gives booster packs from A Forgotten Realms as a reward. So the packs are standard. I actually thought this was a rather elegant way to offer more AFR packs as a reward because otherwise the only way to win them would be through Fblthp when Fblthp gave AFR packs as a reward and the PvE event You've Found an Entrance. I wish they had done the same with either Hunter x Bonder or Titanomachy and converted the reward packs into Strixhaven packs because there is almost no good way to get those packs as a f2p player.