duel yugioh cards YCSW-EN012 - Link Dragon, the Duel Dragon - Super Rare Yugioh Dark Magician RD/HC01-JP001 Over

Senju of the Thousand Hands

ZEXAL Dark Mist SagaAdd-onPS4$4.99 Yu-Gi-Oh

While the latter is not ongoing card advantage it can get back the thing that will be in the appropriate matchups and seems like it would make the deck rather more robust

Lugia VSTAR (SWSH12: Silver Tempest) Price: $28.36 Card Type: Colorless Ability: Summoning Star Hit Points: 280 Lugia VSTAR, featured in the Silver Tempest set of the Pokmon Trading Card Game, is a powerful card with great value

Very desired card and another of top favourites

Engineer in particular is a really good and efficient answer to Nemesis in Legacy and it also answers other decks like elves and goblins, making it a great sideboard choice all round