Luna's Decks

Luna plays a Spirit Deck, consisting of folkloric creatures and enchantments, mostly in the form of Fairy and Plant-type monsters. Several of them are based on the spirits that Luna befriended while at the Duel Monster universe, notably her Spirit Partner; Kuribon, Regulus, and her Signer Dragon; Ancient Fairy Dragon. She carries many support cards that protects them from harm, including the field spell, Ancient Forest, which prevents any monster from switching to Defense Position and destroys them when they attack. Many of her cards seem to have Life Point recovery effects.

Anime
In season 2, like her brother, Luna has a Deck for Turbo Duels as well.

Video Games
In Yu-Gi-Oh! 5D's Stardust Accelerator, she uses a deck called "Fairy Princess", which focuses on LIGHT monsters and stalling her opponents. Her Tag Force 4 deck focuses on protecting her monsters while utilizing cards that do Effect Damage.