This card works perfectly with "D/D Orthros" since you can recover the Pendulum "D/D" monsters you use as a second target for its Pendulum Effect for a constant reuse in each of your turns.
Using this method can also reset the Pendulum Scale of "D/D Savant Kepler" in each of your turns to effectively Pendulum Summon level 8 "D/D/D" monsters without having to worry about its scale decreasing.
Additionally, both "D/D Savant Newton" and "D/D Savant Copernicus" possess Pendulum Effects that can negate Spell or Trap effects that would inflict Effect damage to you. Protecting you from the damaging effects of your own Dark Contract cards and allowing you to recycle this protection. They can also shield you from damage of cards your opponent controls as well. However, note that they can only negate damage done through activated effects, not activated cards.