They can be tapped, untapped, sacrificed, and so on
Marketplace TCGplayer Sets Marketplace Cardmarket Sets Market Trend Price History Deck Usage & Meta Stats Public deck and tournament usage for Spright Starter

Aang and Katara Aang, A Lot to Learn Aang, at the Crossroads Avatar Aang Beastcaller Savant Bumi, Eclectic Earthbender Bumi, King of Three Trials Bumi, Unleashed Diligent Zookeeper Earth King's Lieutenant Earth Kingdom General Earthbending Student Earthen Ally Foggy Swamp Vinebender Graypelt Hunter Great Divide Guide Grovetender Druids Guru Pathik Harabaz Druid Haru, Hidden Talent Hermitic Herbalist Iroh, Grand Lotus Joraga Auxiliary Joraga Bard Katara, the Fearless Kyoshi Warrior Exemplars Mina and Denn, Wildborn Oran-Rief Survivalist Rebellious Captives Skyrider Elf Suki, Kyoshi Warrior Swampbenders Sylvan Advocate Tajuru Archer Tajuru Beastmaster Tajuru Pathwarden Tajuru Stalwart Tajuru Warcaller The Earth King Toph, Earthbending Master Toph, Greatest Earthbender Toph, Hardheaded Teacher Toph, the Blind Bandit Toph, the First Metalbender Turntimber Ranger Uncle Iroh Vastwood Animist Veteran Warleader Walltop Sentries White Lotus Reinforcements

It has been reprinted in various products, from Commander precons to Jumpstart sets, every single year
It isnt the best deck to sit across the table from, but its not like the rest of the format only includes super-happy-fun-time decks either ( editors note: cmon Stasis is great fun )