Raiden, Hand of the Lightsworn (SDLI-EN003) - Structure Deck: Realm of Light (2020 Date Reprint) Unlimited

You can send the top 2 cards of your Deck to the Graveyard, then, if there is a "Lightsworn" monster among those cards, this card gains 200 ATK until your opponent's End Phase. You can only use this effect of "Raiden, Hand of the Lightsworn" once per turn. During each of your End Phases: Send the top 2 cards of your Deck to the Graveyard. You must control this face-up card to activate and to resolve this effect.