| Pinchy McStingbutt | 552 |
| Phyrexian Seedling | 581 |
| Penumbra Umbra | 580 |
| Path to Exile | 15 |
| Paradoxical Outcome | 33 |
| Panglacial Shinobi | 534 |
| Pact of Negation (2 variants) | 169 |
| Orb of Origin | 609 |
| Oracle of the Alpha | 259 |
| Once Upon a Time | 71 |
| Omnipresent Impostor | 504 |
| Omenpath to Naya | 616 |
| Oddric, Lunar Marquis | 551 |
| Oath of Druids (2 variants) | 212 |
| O-Kagachi, Vengeful Kami | 138 |
| Noxious Revival | 70 |
| Norwood Priestess (2 variants) | 211 |
| Nomads en-Kor (2 variants) | 149 |
| Noble Ox | 521 |
| No-Regrets Egret | 533 |
| Night of the Flying Merfolk | 532 |
| New Master of Arms | 520 |
| Nature's Claim | 69 |
| Naturalize 2 | 579 |
| Natural Order (2 variants) | 210 |
| Narset, Parter of Veils | 32 |
| Narod, the Beige Flower | 599 |
| Nalathni Dragon (2 variants) | 197 |
| Mystical Dispute | 31 |
| Mystic Sanctuary | 110 |
| Mutilate | 45 |
| Muraganda Eldrazi | 519 |
| Multani, Yavimaya's Avatar | 248 |
| Mox Poison | 608 |
| Mothers Yamazaki | 598 |
| Mishra's Bauble | 97 |
| Mirri's Guile (2 variants) | 209 |
| Mirri, Weatherlight Duelist | 252 |
| Minsc & Boo, Timeless Heroes | 88 |
| Mindbreak Trap (2 variants) | 168 |
| Mind Twist (2 variants) | 184 |
| Microscope | 607 |
| Merchant Scroll (2 variants) | 167 |
| Mental Misstep | 30 |
| Memnite (2 variants) | 228 |
| Meekstone (2 variants) | 227 |
| Meandered Towershell | 578 |
| Mardu Outrider | 1 |
| Marchesa's Surprise Party | 503 |
| Map to Lorthos's Temple | 531 |