M:tG card similarity search
2BB · instant
target creature gets -x/-x until end of turn, where x is the number of times a capital letter appears in its rules text. (ignore reminder text and flavor text.)
| Name | Mana | Type | Text | 
|---|---|---|---|
| Drown in Ichor | 1B | Sorcery | Target creature gets -4/-4 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | 
| Whisper of the Dross | B | Instant | Target creature gets -1/-1 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | 
| Arcane Subtraction | 1U | Instant | Target creature gets -4/-0 until end of turn. Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.) | 
| Smokespew Invoker | 2B | Creature — Zombie Mutant | {7}{B}: Target creature gets -3/-3 until end of turn. 3/1 | 
| Aquus Steed | 3U | Creature — Beast | {2}{U}, {T}: Target creature gets -2/-0 until end of turn. 1/3 | 
| Nuclear Fallout | XBB | Sorcery | Each creature gets twice -X/-X until end of turn. Each player gets X rad counters. | 
| Defile | B | Instant | Target creature gets -1/-1 until end of turn for each Swamp you control. | 
| Death Pulse | 2BB | Instant | Target creature gets -4/-4 until end of turn. Cycling {1}{B}{B} ({1}{B}{B}, Discard this card: Draw a card.) When you cycle Death Pulse, you may have target creature get -1/-1 until end of turn. | 
| Darkblast | B | Instant | Target creature gets -1/-1 until end of turn. Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.) | 
| 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 |