Effects aren’t out yet, but Japan has just confirmed the inclusion of Converging Wishes as the final new card inside the 20th Anniversary Pack 2nd Wave!
Japan has just announced a Yu-Gi-Oh! Characters deck mixer event via a poster shown on the official twitter account. Included in the poster, new cards for the two 20th Anniversary Packs are mentioned, including the confirmation of Converging Wishes inside the pack!
Effects are not given as of now, but here’s the anime effect for reference!
When a “Shooting Star Dragon” you control is destroyed by battle, you can activate this card to negate the Battle Damage. Then, Special Summon 1 “Stardust Dragon” from your Extra Deck by removing from play the appropriate Synchro Material Monsters from your Graveyard. (This Special Summon is treated as a Synchro Summon.) The “Stardust Dragon” Special Summoned by this effect gains ATK equal to the combined ATK of all Dragon-Type Synchro Monsters in your Graveyard. By returning 1 Synchro Monster from your Graveyard to the Extra Deck, select 1 monster your opponent controls and force it to attack. During the End Phase, remove from play this card and the “Stardust Dragon” Special Summoned by this effect.
Source from 【公式】遊戯王OCG