32 cards where it’s legal in Future Standard and the card types include “elemental”

Aquatic Alchemist // Bubble Up (Wilds of Eldraine #40)
Barkweave Crusher (Dominaria United #154)
Blanchwood Prowler (The Brothers' War #172)
Botanical Brawler (March of the Machine #220)
Bramble Familiar // Fetch Quest (Wilds of Eldraine #164)
Child of the Volcano (The Lost Caverns of Ixalan #140)
Flame Channeler // Embodiment of Flame (Innistrad: Midnight Hunt #141)
Flame Channeler // Embodiment of Flame (Innistrad: Midnight Hunt #141)
Flourishing Bloom-Kin (Murders at Karlov Manor #160)
Frostbridge Guard (Wilds of Eldraine #14)
Frostfist Strider (Dominaria United #51)
Hearth Elemental // Stoke Genius (Wilds of Eldraine #136)
Icewrought Sentry (Wilds of Eldraine #55)
Interdisciplinary Mascot (March of the Machine #326)
Invasion of Azgol // Ashen Reaper (March of the Machine #232)
Invasion of Azgol // Ashen Reaper (March of the Machine #232)
Invasion of Karsus // Refraction Elemental (March of the Machine #146)
Invasion of Karsus // Refraction Elemental (March of the Machine #146)
Invasion of Zendikar // Awakened Skyclave (March of the Machine #194)
Invasion of Zendikar // Awakened Skyclave (March of the Machine #194)
Living Conundrum (Murders at Karlov Manor #63)
Magma Pummeler (Innistrad: Crimson Vow #169)
Omnath, Locus of All (March of the Machine #249)
Pyre Spawn (Innistrad: Crimson Vow #173)
Rotisserie Elemental (Wilds of Eldraine #148)
Scalding Viper // Steam Clean (Wilds of Eldraine #235)
Sol'Kanar the Tainted (Dominaria United #219)
Splashy Spellcaster (Wilds of Eldraine #70)
Tempest Hart // Scan the Clouds (Wilds of Eldraine #238)
Territorial Maro (Dominaria United #184)
Titania, Gaea Incarnate (The Brothers' War #256b)
Titania, Voice of Gaea (The Brothers' War #193)
Titan of Industry (Streets of New Capenna #159)
Vengeful Creeper (Murders at Karlov Manor #182)
Yargle and Multani (March of the Machine #256)
Zephyr Winder (March of the Machine #328)

The arc of my blade has carved a path of light to the end of these results.