Mulligans
This deck aims to contest the board while maintaining a large hand size, and eventually have overwhelming turns with Luna's Pocket Galaxy and then Stargazer Luna.
Early game: Fire Fly is the only option for turn 1. Use the token for aggressive decks or save it for the 1-drop elemental tag and maintaining hand size. Play Raven Familiar to draw Luna's Pocket Galaxy. Play Tar Creeper to contest aggressive decks and begin the elemental chain. Get out an early Mountain Giant when possible. Shimmering Tempest can be used to contest the board, generate a card, and for the elemental tag.
Mid-game: Steam Surger, Bonfire Elemental, Servant of Kalimos, and Blazecaller are all well-statted elementals that with good battlecries. Astromancer and Astromancer are also powerful with a large hand size, but they are not elementals so another one must be played to continue the chain.
Late game: Play Luna's Pocket Galaxy whenever possible. After this, try to cycle through as many discounted cards as possible with the help of Stargazer Luna. Cauldron Elemental is specifically a powerful card in this deck when at a discounted price. Play Frost Lich Jaina if necessary.
Utility: Only one spell can be ran in this deck, so Voodoo Doll is included for removal and Spellbreaker is included for silence.