Use Fiend-Type monsters that Summon other Fiends, like "Stygian Security", so your opponent will be tempted to attack over and over. This will help thin out your Deck and will always have your conditions met for this card's Summoning costs.
This card is surprisingly useful in a "Koa'ki Meiru"-based Deck. The card's Summoning cost can easily be paid, since "Koa'ki Meirus" revolve around keeping monsters with same type in hand and field, and its effect can be abused with "Core Reinforcement" and "Koa'ki Meiru Valafar".
Use "Mound of the Bound Creator" in conjunction with this card to create an essentially immortal monster with very high ATK, and to ensure the opponent cannot simply play defensively to protect their LP.