Converging Wishes

Normal Trap Card

If you have 5 or more Dragon-Type Synchro Monsters with different names in your Graveyard: Special Summon 1 "Stardust Dragon" from your Extra Deck (this is treated as a Synchro Summon), but banish it during the End Phase. Equip it with this card. While equipped, it gains ATK equal to the combined ATK of all Dragon-Type Synchro Monsters in your Graveyard. Also while equipped, when it destroys an opponent's monster by battle: You can banish 1 Dragon-Type Synchro Monster from your Graveyard; it can attack an opponent's monster again in a row.

Rulings – Yugipedia

Printings:

Duelist Saga: DUSA-EN037 (Ultra Rare) - 2017-03-30
King's Court: KICO-EN059 (Rare) - 2021-07-08

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.05