M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Festercreep | 1B | Creature — Elemental | Festercreep enters the battlefield with a +1/+1 counter on it. {1}{B}, Remove a +1/+1 counter from Festercreep: All other creatures get -1/-1 until end of turn. 0/0 |
| Scent of Nightshade | 1B | Instant | Reveal any number of black cards in your hand. Target creature gets -X/-X until end of turn, where X is the number of cards revealed this way. |
| Festering March | 3BB | Sorcery | Creatures your opponents control get -1/-1 until end of turn. Exile Festering March with three time counters on it. Suspend 3—{2}{B} (Rather than cast this card from your hand, you may pay {2}{B} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) |
| Fungal Infection | B | Instant | Target creature gets -1/-1 until end of turn. Create a 1/1 green Saproling creature token. |
| Foundry Hornet | 3B | Creature — Insect | Flying When Foundry Hornet enters the battlefield, if you control a creature with a +1/+1 counter on it, creatures your opponents control get -1/-1 until end of turn. 2/3 |
| Wolf in _____ Clothing | 3B | Creature — Wolf Guest | When this creature enters the battlefield, you may put a name sticker on it. When you do, up to X target creatures each get -1/-1 until end of turn, where X is the number of unique vowels on that sticker. (The vowels are A, E, I, O, U, and Y.) 2/3 |
| Necrotic Wound | B | Instant | Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard. If that creature would die this turn, exile it instead. |
| Herald of Anguish | 5BB | Creature — Demon | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Flying At the beginning of your end step, each opponent discards a card. {1}{B}, Sacrifice an artifact: Target creature gets -2/-2 until end of turn. 5/5 |
| Foul Renewal | 3B | Instant | Return target creature card from your graveyard to your hand. Target creature gets -X/-X until end of turn, where X is the toughness of the card returned this way. |
| Ancestral Vengeance | BB | Enchantment — Aura | Enchant creature When Ancestral Vengeance enters the battlefield, put a +1/+1 counter on target creature you control. Enchanted creature gets -1/-1. |