32 cards where the full Oracle text includes “persist”

Aerie Ouphes (Eventide #65)
Antler Skulkin (Eventide #167)
Cauldron Haze (Eventide #84)
Cauldron of Souls (Commander Anthology Volume II #180)
Dusk Legion Sergeant (The Lost Caverns of Ixalan Commander #80)
Furystoke Giant (Shadowmoor #93)
Glen Elendra Archmage (Ultimate Masters #58)
Gravelgill Axeshark (Shadowmoor #164)
Grazing Kelpie (Eventide #153)
Heartmender (Shadowmoor #228)
Kitchen Finks (Ultimate Masters #216)
Kithkin Spellduster (Eventide #8)
Lesser Masticore (Modern Horizons #225)
Lingering Tormentor (Eventide #36)
Murderous Redcap (Ultimate Masters #217)
Night Brushwagg Ringmaster (Unfinity Sticker Sheets #3)
Persistent Petitioners (Ravnica Remastered #53)
Persistent Specimen (Innistrad: Crimson Vow #125)
Puppeteer Clique (Commander Legends: Battle for Baldur's Gate #769)
Putrid Goblin (Modern Horizons #101)
Rattleblaze Scarecrow (Shadowmoor #259)
Rendclaw Trow (Eventide #127)
Restless Apparition (Modern Masters 2015 #196)
River Kelpie (Commander 2019 #93)
Safehold Elite (Ultimate Masters #220)
Scuzzback Marauders (Ultimate Masters #221)
Startled Awake // Persistent Nightmare (Shadows over Innistrad #88)
Startled Awake // Persistent Nightmare (Shadows over Innistrad #88)
Thunderblust (Modern Masters 2015 #131)
Trapjaw Kelpie (Eventide #164)
Twilight Shepherd (Duel Decks Anthology: Divine vs. Demonic #11)
Wingrattle Scarecrow (Shadowmoor #270)
Woodfall Primus (New Capenna Commander #322)

This search is finished. Now the real work can begin.