42 cards where the card is tagged “splits-on-death”

Anax, Hardened in the Forge (Commander Masters #204)
Caldaia Guardian (New Capenna Commander #56)
Chasm Skulker (March of the Machine Commander #218)
Chronozoa (Planar Chaos #37)
Conclave Cavalier (Ravnica Remastered #173)
Elenda's Hierophant (The Lost Caverns of Ixalan Commander #71)
Elenda, the Dusk Rose (The Lost Caverns of Ixalan Commander #268)
Eyeblight Cullers (Kaldheim Commander #48)
Goblin Marshal (Urza's Destiny #85)
Hallowed Spiritkeeper (Crimson Vow Commander #88)
Hangarback Walker (Commander Masters #951)
Hooded Hydra (Murders at Karlov Manor Commander #171)
Jötun Owl Keeper (Coldsnap #9)
Kinsbaile Borderguard (Morningtide #14)
Liberated Livestock (Wilds of Eldraine Commander #5)
Maalfeld Twins (Commander Legends #132)
Mausoleum Guard (Duel Decks: Sorin vs. Tibalt #13)
Mitotic Slime (New Capenna Commander #302)
Mongrel Pack (Tempest #237)
Murder Investigation (Magic Origins #27)
Nadier, Agent of the Duskenel (Commander Legends #135)
Nested Shambler (Modern Horizons 2 #95)
Ochre Jelly (Adventures in the Forgotten Realms #196)
One with the Kami (Neon Dynasty Commander #27)
Ooze (Planechase Anthology Tokens #17)
Phyrexian Triniform (Commander Masters #969)
Pink Horror (Warhammer 40,000 Commander #136)
Polukranos Reborn // Polukranos, Engine of Ruin (March of the Machine #200)
Polukranos Reborn // Polukranos, Engine of Ruin (March of the Machine #200)
Rasaad, Dragon Monk (Alchemy Horizons: Baldur's Gate #4u)
Rasaad, Sylvan Monk (Alchemy Horizons: Baldur's Gate #4g)
Rasaad, Warrior Monk (Alchemy Horizons: Baldur's Gate #4r)
Sprouting Thrinax (Double Masters 2022 #278)
Symbiotic Beast (Dominaria Remastered #180)
Symbiotic Elf (Duel Decks: Mirrodin Pure vs. New Phyrexia #59)
Symbiotic Wurm (Vintage Masters #236)
Synapse Necromage (The Lost Caverns of Ixalan #125)
Tangled Colony (Wilds of Eldraine #113)
Termagant Swarm (Warhammer 40,000 Commander #99)
Torsten, Founder of Benalia (Dominaria United Commander #47)
Triplicate Titan (Commander 2021 #79)
Worldspine Wurm (Return to Ravnica #140)
Wurmcoil Engine (Double Masters #308)

Though this query has ended, its relics still slumber in New Argive.