54 cards where (the text includes “changeling” or the card types include “egg” or the text includes “egg”) and the color identity ≤ GRW

A Golden Opportunity (Alchemy: Wilds of Eldraine #13)
Atla Palani, Nest Tender (Dominaria United Commander #142)
Avian Changeling (Modern Masters #6)
Barkform Harvester (Bloomburrow #243)
Birthing Boughs (Modern Horizons #221)
Blades of Velis Vel (Modern Masters 2015 #105)
Bloodline Pretender (March of the Machine Commander #350)
Chameleon Colossus (Forgotten Realms Commander #153)
Changeling Berserker (Lorwyn #160)
Changeling Hero (Lorwyn #9)
Changeling Sentinel (Morningtide #6)
Changeling Titan (Lorwyn #200)
Chicken Egg (Unglued #41)
Chimeric Egg (Darksteel #106)
Crib Swap (Commander Legends: Battle for Baldur's Gate #690)
Dingus Egg (Eighth Edition #297)
Dinosaur Egg (The Lost Caverns of Ixalan Commander #92)
Dragon Egg (Commander Legends #173)
Faceless Agent (Jumpstart: Historic Horizons #1)
Fire-Belly Changeling (Duel Decks: Knights vs. Dragons #51)
Formless Genesis (Duskmourn: House of Horror Commander #34)
Game-Trail Changeling (Morningtide #123)
Gladewalker Ritualist (Kaldheim #392)
Golden Egg (Throne of Eldraine #220)
Guardian Gladewalker (Kaldheim #174)
Impostor of the Sixth Pride (Modern Horizons #14)
Irregular Cohort (Commander Legends: Battle for Baldur's Gate #696)
Littjara Glade-Warden (Kaldheim #182)
Masked Vandal (Kaldheim #184)
Maskwood Nexus (Commander Legends: Battle for Baldur's Gate #865)
Mirror Entity (Outlaws of Thunder Junction Commander #83)
Mossfire Egg (Odyssey #304)
Mysterious Egg (Ikoria: Lair of Behemoths #3)
Nesting Dragon (Outlaws of Thunder Junction Commander #176)
Orochi Eggwatcher // Shidako, Broodmistress (Champions of Kamigawa #233)
Palani's Hatcher (The Lost Caverns of Ixalan #237)
Realmwalker (The Lost Caverns of Ixalan Commander #250)
Resolute Veggiesaur (Unfinity #153)
Roc Egg (Commander 2019 #73)
Rukh Egg (Ninth Edition #214)
Scavenger Hunt (Unfinity #226f)
Shields of Velis Vel (Lorwyn #39)
Smoldering Egg // Ashmouth Dragon (Innistrad: Midnight Hunt #159)
Smoldering Egg // Ashmouth Dragon (Innistrad: Midnight Hunt #159)
Summoner's Egg (Fifth Dawn #157)
Sungrass Egg (Odyssey #311)
Taurean Mauler (Foundations #633)
The Dragon-Kami Reborn // Dragon-Kami's Egg (Kamigawa: Neon Dynasty #181)
The Dragon-Kami Reborn // Dragon-Kami's Egg (Kamigawa: Neon Dynasty #181)
Three Tree Mascot (Foundations #682)
Triassic Egg (Masters Edition IV #235)
Universal Automaton (Modern Horizons #235)
Valiant Changeling (Commander Legends: Battle for Baldur's Gate #711)
War-Spike Changeling (Modern Masters #139)
Webweaver Changeling (Double Masters 2022 #164)
Woodland Changeling (Lorwyn #242)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.