You can also include any of the easy two-card combos like Dark Depths + Thespian Stage (+ Expedition Map, Elvish Reclaimer, and Crop Rotation), Survival of the Fittest + Recurring Nightmare, or Strip Mine + Crucible of the Worlds, Wrenn and Six, Ramunap Excavator, or Icetill Explorer (+Crop Rotation, Elvish Reclaimer, Green Suns Zenith)
Even ignoring the financial aspect, this deck looks great
They are essentially Character Rares without Trainers present

Duct Crawler Dune Beetle Durable Coilbug Duskshell Crawler Emerald Dragonfly Endless Cockroaches Eumidian Terrabotanist Eumidian Wastewaker Evendo Brushrazer Fen Hauler Ferropede Filigree Crawler Final Iteration Fire Ants Firefly Flameborn Viron Flesh Burrower Flow of Maggots Fog of Gnats Foundry Hornet Fretwork Colony Fumulus, the Infestation Gene Pollinator Genemorph Imago Giant Adephage Giant Ambush Beetle Giant Ankheg Giant Caterpillar Giant Cockroach Giant Dustwasp Giant Fly Giant Ladybug Giant Mantis Giant Solifuge Giant-Sized Flying Ant Gigapede Gleancrawler Goldenglow Moth Golgari Longlegs Goliath Beetle Grave-Shell Scarab Grist, Voracious Larva Gust-Skimmer Halo Scarab Hawkeater Moth Haywire Mite Heartstabber Mosquito Hex Parasite Highspire Mantis Horizon Explorer Hornet Nest Hornet Queen Huskburster Swarm Icetill Explorer Imperial Moth Infesting Radroach Insatiable Skittermaw Insectile Aberration Insectoid Exterminator Intrepid Tenderfoot Invader Parasite Invasive Species Iridescent Hornbeetle Ironshell Beetle It of the Horrid Swarm Jagwasp Swarm Jhoira's Timebug Jhoira's Toolbox Kathril, Aspect Warper Kazandu Nectarpot Killer Bees Kraul Foragers
