Every pack includes 5 cards of rarity Rare or higher, 35 Uncommon, 46 Common, and 1 Full-Art Land cards, with a total of 1012 Traditional Foil cards
If you have some other crazy idea up your sleeve, you can use a card like Baral, Chief of Compliance, which works as a creature and helps lower the mana cost of Time Stretch
Cards Between $5-10 Bloodbender's Rise / Bloodchief Ascension Bumi, Unleashed Dockside Extortionist Mayor Tong of Chin Village / Drannith Magistrate Lifelong Friendship / Eladamri's Call Fabled Passage Fated Firepower Ozai, the Phoenix King Planetarium of Wan Shi Tong Redirect Lightning Sozin's Comet The Legend of Kuruk / Avatar Kuruk The Legend of Kyoshi / Avatar Kyoshi Volcano of Roku's Island / Valakut, the Molten Pinnacle White Lotus Tile Cards Between $10-15 Avatar Aang / Aang, Master of Elements Heroic Intervention Joo Dee, Public Servant / Sakashima of a Thousand Faces The Legend of Roku / Avatar Roku Promos, Alternate Art, and More Avatar: The Last Airbender has a lot of alternate version cards with special art treatments, both in TLA and TLE
Here is the other card I wanted to make Rainbow a variant for, "Rocket-Powered Turbo Slug" (Link: scryfall.com/card/unh/87/rocke)
