You can Ritual Summon this card with "Black Luster Ritual".
|Pack||Chaotic Compliance [UR]|
You can use Gateway to Chaos to get Black Luster Soldier into your hand, and spell card later on after 3 spell counters. Beginning of heaven and earth can also be used to add Black Luster Soldier to hand or mill him to the graveyard.
Super Soldier Synthesis is a more cost efficient way to ritual summon Black Luster Soldier, but requires more specific tributes. Additionally can be used to ritual summon a Black Luster Soldier in your graveyard.