24 cards where the power >= 4 and the set is “m21” and (the rarity is equal to common or the rarity is equal to uncommon)

Aven Gagglemaster (Core Set 2021 #5)
Blood Glutton (Core Set 2021 #90)
Bone Pit Brute (Core Set 2021 #132)
Canopy Stalker (Core Set 2021 #175)
Chrome Replicator (Core Set 2021 #229)
Colossal Dreadmaw (Core Set 2021 #176)
Forgotten Sentinel (Core Set 2021 #231)
Garruk's Gorehorn (Core Set 2021 #184)
Gloom Sower (Core Set 2021 #100)
Gnarled Sage (Core Set 2021 #187)
Goremand (Core Set 2021 #101)
Havoc Jester (Core Set 2021 #149)
Hellkite Punisher (Core Set 2021 #151)
Keral Keep Disciples (Core Set 2021 #334)
Leafkin Avenger (Core Set 2021 #220)
Onakke Ogre (Core Set 2021 #155)
Predatory Wurm (Core Set 2021 #338)
Spined Megalodon (Core Set 2021 #72)
Tolarian Kraken (Core Set 2021 #80)
Turret Ogre (Core Set 2021 #169)
Twinblade Assassins (Core Set 2021 #226)
Waker of Waves (Core Set 2021 #84)
Warden of the Woods (Core Set 2021 #213)
Wildwood Patrol (Core Set 2021 #339)

In the blink of an eye, they strode from deep snow to the end of this search.