Otherwise, snagging 1-3 lands is the norm, and you get to put one into play to boot
3 Dark Confidant Emet-Selch, Unsundered Esper Terra Gogo, Master of Mimicry Golbez, Crystal Collector Hope Estheim Joshua, Phoenix's Dominant Kefka, Court Mage Kefka, Ruler of Ruin Kuja, Genome Sorcerer Mysidian Elder Quistis Trepe Shantotto, Tactician Magician Summon: Esper Ramuh Tellah, Great Sage Terra, Magical Adept The Emperor of Palamecia The Lord Master of Hell Trance Kuja, Fate Defied Venat, Heart of Hydaelyn Vivi Ornitier Xande, Dark Mage
As for your background, its common to pair Gale with Scion of Halaster to stock the graveyard, but I could see a burn-centric brew leveraging Dragon Cultist to great effect
You could include flicker or blink spells to take advantage of both of its token generation effects
Bumbleflower, cute as she is, is also extremely flexible