Activate only as a sorcery and only once
It's a Spell that lets the controller pay 800 Life Points to excavate the top four cards from their Deck and Special Summon any weak Normal Monsters among them all three required Normal Monsters fulfill this category, plus it's possible to put a fourth EARTH Normal Monster among them for an Extra Deck play
While the keyword protection existed earlier, that mechanic is much more brutal in its purpose and a significant combat boost in providing immunity against a whole color or card type
Thankfully, this overpowered ability has an additional cost: you must look like the card you want to tutor
Village Rites offers a similar effect for a lower upfront cost, but not allowing you to sacrifice an artifact makes it a bit less flexible, and the Treasure is a huge addition to this effect
you can conduct up to 3 Normal Summons/Sets this turn, not just 1