Book of Moon [OP13-EN001] Ultimate RareSet: OTS Tournament Pack 13 Card type: Quick Play Spell Rarity: Ultimate Rare Target 1 face up monster on the field; change that target to face down Defense Position.

You must also offer monsters from the field or your hand whose total Level Stars equal the Level Stars of the Ritual Monster you are attempting to Ritual Summon

Ask Professor Oak to get you started

add up to 2 Character cards with a cost of 5 from your hand or trash to the top of your Life cards face-up

Set: Ancient Guardians Card type: Effect Monster Rarity: Collector's Rare Attack: 3100 Defense: 2200 If this card is in your GY: You can Tribute 3 monsters

Set: Sun & Moon: Guardians Rising Type: Basic Grass Energy Rarity: Secret Rare

it is attacked instead

Set: XY: Trainer Kit 1 - Wigglytuff Type: Supporter Rarity: Promo

Set: Toon Chaos Card type: Quick Play Spell Rarity: Collector's Rare If you control "Toon World": Reveal 3 Toon monsters with different names from your Deck

it's a total free-for-all

Set: Sword & Shield: Chilling Reign Type: Supporter Rarity: Ultra Rare

Set: Gym Challenge 1st Edition Type: Psychic Rarity: Rare Retreat cost: Colorless

Set: OTS Tournament Pack 18 Card type: Normal Spell Rarity: Ultimate Rare Fusion Summon 1 Fusion Monster from your Extra Deck that lists a "Destiny HERO" monster as material