If you Ritual or Fusion Summon using "Blue-Eyes White Dragon" or "Dark Magician": You can target 1 card your opponent controls or in their GY; banish it. You can send this face-up card from the field to the GY, then target 1 Level 7 or higher Normal Monster in your GY; add it to your hand or shuffle it into the Deck. You can only use each effect of "Strength in Unity" once per turn.