Sinister Yorishiro (SHSP-EN089) - Shadow Specters Unlimited

Each turn, 1 Level 5 or higher Fiend-Type monster you Normal Summon can be Summoned without Tributing. If exactly 1 Normal Summoned/Set Level 5 or higher Fiend-Type monster (and no other cards) would be destroyed, you can send this card to the Graveyard instead.