Chain this card's effect to the activation of an opponent's Spell or Trap Card (besides Counter Trap Cards) to negate its effects.
During your opponent's End Phase, if this card's effect has not been activated yet, target it one of your "Dark Contract" cards. Since its effects will be negated until the next Standby Phase, the damaging effect will be negated, but its beneficial effects will not.
Use the effect of "Lamia" to send "Dark Contract with the Gate" to the Graveyard and Special Summon it.
Use the effect of "Necro Slime" to banish it and either "Genghis" or "Alexander" from your Graveyard to Fusion Summon "D/D/D Oracle King d'Arc".
Tune "Lamia" with "d'Arc" to Synchro Summon this card.
Once this combo is complete, both your opponent's monster effect activations can be locked down through the effect of "Crystal Wing Synchro Dragon", and also block their Spell/Trap effects using the effects of this card and "Void Ogre Dragon". To apply further pressure on your opponent, "Vanity's Emptiness" can also be activated after completing the combo.