| Mr. Wiggles, Helpful Butterfly | RG03b |
| Mox Poison | RA11b |
| Moth Herb Elixir | UA01c |
| More of That Strange Oil... | CU13 |
| Monster Mash-Up | RB15 |
| Monet, Sensei of the Sewers | RZ06g |
| Mister Cheddar, Cheese Sliver | RB05a |
| Minnea, Planar Tourist | MG01 |
| Mindslaver Toolkit | RA11a |
| Mijo, the Bull | RR03b |
| Merfolk Surveyor | CG03d |
| Memnarchitect | RU02 |
| Melira's Snacks | CA12 |
| May the Mana Be with You | CC03 |
| May of the Machine | CB03 |
| Math is for Blockers | RR16 |
| Mark Ritual | CB12 |
| Margle, Cousin of Yargle | RZ05b |
| Manakin and Millikin | RA03c |
| Mana Max, Afterburner | RR04f |
| Mana Conference | UL01a |
| Maître Tree | RG03a |
| MagicConsecrated Sphinx | RU06a |
| Magic Designer | UC02 |
| Maeve, Wearer of Many Hats | RZ04d |
| Luxior and Shadowspear | RA03b |
| Lorthos, Tentacled Terror | RU08a |
| Lord of Atlanta | RU01 |
| Long-Term Phyresis Study | CB13 |
| Lona, Tracker of the Known | RG02c |
| Locus Cobra | RG02b |
| Literal Delver of Secrets | CU06 |
| Life Cloud | RW13 |
| Life at Stake | CB11a |
| Leisure Bicycle | CA02a |
| Leech Medic | RW04 |
| Lava, Axe | UR15 |
| Lander Rizzi | RG06c |
| Land Station | RG02e |
| Kylem All-Star | RW04b |
| Koma and Toski, Compleated | RZ08b |
| Knowing // Half the Battle | RZ15 |
| Kibo's Bananamobile | UA05d |
| Kevin, Questing Dragon | RR08a |
| Karlov's Crossbow | CA06a |
| Kamigawa Charm | UG03b |
| Kallist Rhoka | RZ02a |
| Just a Li'l Guy | RG11a |
| Joven and Chandler | UR05 |
| Joraga Peach | CG01 |