YGO TCG Structure Deck: Spirit Charmers - Rules of Play says:
Structure Deck: Spirit Charmers focuses on Spellcasters and controlling monsters of many Attributes. Basic Charmers can steal away monsters that match their Attribute, and if you control even one Charmer, you can fill the field with familiars! Buff the whole team with Awakening of the Possessed then back up your monsters with powerful Spiritual Art cards that let you remove the best card from your opponent's hand, bury any card they control to the bottom of the Deck, inflict massive damage, and more!