M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Plague Mare | 1BB | Creature — Nightmare Horse | Plague Mare can't be blocked by white creatures. When Plague Mare enters the battlefield, creatures your opponents control get -1/-1 until end of turn. 2/2 |
| Penregon Besieged | 1B | Enchantment | At the beginning of your end step, choose a creature with the least toughness among creatures your opponents control. It perpetually gets -1/-1. When your opponents control no creatures, sacrifice Penregon Besieged. |
| Chupacabra Echo | 2BB | Creature — Beast Horror Spirit | Fathomless descent — When Chupacabra Echo enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard. 3/2 |
| Downsize | U | Instant | Target creature you don't control gets -4/-0 until end of turn. Overload {2}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.") |
| Ringwraiths | 4BB | Creature — Wraith Knight | When Ringwraiths enters the battlefield, target creature an opponent controls gets -3/-3 until end of turn. If that creature is legendary, its controller loses 3 life. When the Ring tempts you, return Ringwraiths from your graveyard to your hand. 5/5 |
| Malicious Eclipse | 1BB | Sorcery | All creatures get -2/-2 until end of turn. If a creature an opponent controls would die this turn, exile it instead. |
| Invasion of Innistrad | 2BB | Battle — Siege | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) Flash When Invasion of Innistrad enters the battlefield, target creature an opponent controls gets -13/-13 until end of turn. |
| Shipwreck Singer | UB | Creature — Siren | Flying {1}{U}: Target creature an opponent controls attacks this turn if able. {1}{B}, {T}: Attacking creatures get -1/-1 until end of turn. 1/2 |
| Illness in the Ranks | B | Enchantment | Creature tokens get -1/-1. |
| Virulent Plague | 2B | Enchantment | Creature tokens get -2/-2. |