You can discard 1 Spell Card; add 1 LIGHT Ritual Monster or 1 Ritual Spell Card from your Deck to your hand. You can shuffle any number of Spell Cards from your Graveyard into the Deck, then target 1 LIGHT Fairy-Type monster in your Graveyard whose Level equals the number of cards you shuffled into the Deck; Special Summon it. You can only use each effect of "Ritual Sanctuary" once per turn.
How to Get
Discards for cost / Adds from Deck to hand / Returns from your Graveyard to your Deck