M:tG card similarity search
3B · Creature — Human Wizard
{2}{B}, {T}: 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. 1/1
| Name | Mana | Type | Text | 
|---|---|---|---|
| Nighthowler | 1BB | Enchantment Creature — Horror | Bestow {2}{B}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Nighthowler and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards. 0/0 | 
| 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 | 
| Mirror-Mad Phantasm | 3UU | Creature — Spirit | Flying {1}{U}: Mirror-Mad Phantasm's owner shuffles it into their library. If that player does, they reveal cards from the top of that library until a card named Mirror-Mad Phantasm is revealed. The player puts that card onto the battlefield and all other cards revealed this way into their graveyard. 5/1 | 
| Magma Sliver | 3R | Creature — Sliver | All Slivers have "{T}: Target Sliver creature gets +X/+0 until end of turn, where X is the number of Slivers on the battlefield." 3/3 | 
| Sicken | B | Enchantment — Aura | Enchant creature Enchanted creature gets -1/-1. Cycling {2} ({2}, Discard this card: Draw a card.) | 
| Valki, God of Lies | 1B | Legendary Creature — God | When Valki enters the battlefield, each opponent reveals their hand. For each opponent, exile a creature card they revealed this way until Valki leaves the battlefield. {X}: Choose a creature card exiled with Valki with mana value X. Valki becomes a copy of that card. 2/1 | 
| Quag Sickness | 2B | Enchantment — Aura | Enchant creature Enchanted creature gets -1/-1 for each Swamp you control. | 
| Caustic Crawler | 3BB | Creature — Insect | Landfall — Whenever a land enters the battlefield under your control, you may have target creature get -1/-1 until end of turn. 4/3 | 
| Coax from the Blind Eternities | 2U | Sorcery | You may reveal an Eldrazi card you own from outside the game or choose a face-up Eldrazi card you own in exile. Put that card into your hand. | 
| Black Dragon | 5BB | Creature — Dragon | Flying Acid Breath — When Black Dragon enters the battlefield, target creature an opponent controls gets -3/-3 until end of turn. 4/4 |