The Soul of Light and Darkness
At the beginning of the Duel, add the Soul of Light and Darkness and 1 Super Soldier Ritual to your Graveyard. During this Duel, you can only Special Summon "Gaia The Fierce Knight" monsters, "Black Luster Soldier" monsters, and monsters without Rank or Level.
Once per turn, you can activate the following effect when you Special Summon a "Black Luster Soldier" monster. Add 1 "Black Luster Soldier" Ritual Monster when there are no cards with the same name in your Graveyard and field, and add it from the Deck to your hand. Then, select up to 3 banished cards of yours and return them to your Graveyard. After so, for once per Duel only, if there is "Black Luster Soldier" on your field, you can Set 1 Ritual Spell Card from your Deck to your field.