Lumina, Lightsworn Summoner (SDLI-EN012) - Structure Deck: Realm of Light (2020 Date Reprint) Unlimited

Once per turn: You can discard 1 card, then target 1 Level 4 or lower "Lightsworn" monster in your Graveyard; Special Summon that target. During each of your End Phases: Send the top 3 cards of your Deck to the Graveyard. You must control this face-up card to activate and to resolve this effect.