| Assault Formation | IMA-155 |
| Assassin's Blade | POR-80 |
| Asmoranomardicadaistinaculdacar | MH2-186 |
| Ashnod's Altar | EMA-218 |
| Ashaya, the Awoken World | TORI-7 |
| Ash Barrens | CM2-235 |
| Asceticism | SOM-110 |
| Artisan of Kozilek | CM2-14 |
| Artillerize | NPH-79 |
| Artificer's Assistant | DOM-44 |
| Artful Maneuver | DTK-4 |
| Arrow Storm | KTK-98 |
| Arrogant Wurm | TOR-120 |
| Arrogant Vampire | POR-79 |
| Arrester's Zeal | RNA-4 |
| Arrest | MM2-9 |
| Army Ants | VIS-126 |
| Arms Dealer | MMQ-172 |
| Armored Ascension | SHM-2 |
| Armorcraft Judge | KLD-144 |
| Armillary Sphere | C17-203 |
| Armament Corps | KTK-165 |
| Armadillo Cloak | EMA-195 |
| Arlinn, Voice of the Pack | WAR-150 |
| Arlinn, the Pack's Hope // Arlinn, the Moon's Fury | MID-211 |
| Arlinn, Embraced by the Moon Emblem | TSOI-18 |
| Arlinn Kord // Arlinn, Embraced by the Moon | SOI-243 |
| Argothian Opportunist | BRO-167 |
| Argothian Elder | USG-233 |
| Argivian Restoration | DDF-69 |
| Argivian Find | WTH-6 |
| Argentum Armor | AFC-198 |
| Arena of Glory | MH3-215 |
| Ardent Plea | ARB-1 |
| Ardent Elementalist | MID-128 |
| Arcum's Astrolabe | MH1-220 |
| Archway Commons | STX-263 |
| Archway Angel | RNA-3 |
| Archon of Absolution | ELD-3 |
| Archmage Emeritus | STX-37 |
| Archivist of Oghma | CLB-4 |
| Archive Trap | ZEN-41 |
| Architects of Will | ARB-17 |
| Archfiend of Sorrows | MH2-74 |
| Archetype of Imagination | C18-81 |
| Archetype of Finality | BNG-58 |
| Archetype of Endurance | BNG-116 |
| Archetype of Aggression | BNG-88 |
| Archangel of Tithes | ORI-4 |
| Archangel | C13-5 |