Two new cards have been revealed! One that allows you to bring out big Fiend-Types for free and a big Fiend-Type that’ll stay on the field.

SHSP-JP0899 Sinister Yorishiro
Continuous Trap Card
Each turn, 1 Level 5 or higher Fiend-Type monster you Normal Summon can be Summoned without Tributing. If eactly 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.
(Ultra Rare)

Source: https://yugiohblog.konami.com/articles/?p=5607