I foresee Level 10 themes in the near future.
DUNE-JP064 十種神鏡陣 Tokusanoshinkyoujin (Mirror Formation of the Ten Sacred Treasures)
Normal Spell Card
(1) Send monster(s) from your hand or that are face-up on your field to the GY so that their total Levels equal exactly 10; draw 2 cards
Note: This card is named after the Tokusanokantakara, a collection of 10 divine treasures from the Sendai Kuji Hongi, one of the earliest collected histories of Japan.