The ramp from this will help towards your general theme but it is not good ramp
Animal Sanctuary Aphelia, Viper Whisperer Bestial Menace Blech, Loafing Pest Butch DeLoria, Tunnel Snake Champion of Wits Cobra Trap Endless Swarm Fanatic of Rhonas Fire Snake Hapatra, Vizier of Poisons Honored Hydra Hooded Hydra Kaseto, Orochi Archmage Mystic Snake Ophiomancer Orochi Eggwatcher Orochi Eggwatcher Orochi Hatchery Patagia Viper Patron of the Orochi Pharika, God of Affliction Pick Your Poison (playtest) Rhonas's Last Stand Ribbon Snake Rite of the Serpent Sachi, Daughter of Seshiro Seed the Land Serpent Generator Seshiro the Anointed Shisato, Whispering Hunter Sinuous Striker Snake Basket Snake Pit Snake of the Golden Grove Snakeform Sosuke's Summons Sosuke, Son of Seshiro Tah-Crop Skirmisher Xyris, the Writhing Storm Zodiac Snake
Filling your deck with Creatures with power one or less may seem like an easy way to get run over, especially in a format known for its bombs, but Shirei makes up for that by letting you take advantage of death and enters triggers
10: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step." Daretti, Scrap Savant can be your commander
You may return that card to the battlefield under its owner's control
