M:tG card similarity search
1U · Creature — Siren
Flash Flying When Threnody Singer enters the battlefield, target creature an opponent controls gets -X/-0 until end of turn, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) 1/3
| Name | Mana | Type | Text |
|---|---|---|---|
| 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. |
| Isperia's Skywatch | 5U | Creature — Vedalken Knight | Flying When Isperia's Skywatch enters the battlefield, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.) 3/3 |
| Faerie Duelist | 1U | Creature — Faerie Rogue | Flash Flying When Faerie Duelist enters the battlefield, target creature an opponent controls gets -2/-0 until end of turn. 1/2 |
| 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 |
| Blight-Breath Catoblepas | 4BB | Creature — Beast | When Blight-Breath Catoblepas enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.) 3/2 |
| Drana's Silencer | 5B | Creature — Vampire Rogue | When Drana's Silencer enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) 3/2 |
| Archfiend of Sorrows | 5BB | Creature — Demon | Flying When Archfiend of Sorrows enters the battlefield, creatures your opponents control get -2/-2 until end of turn. Unearth {3}{B}{B} ({3}{B}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) 4/5 |
| Skulking Killer | 3B | Creature — Vampire Assassin | When Skulking Killer enters the battlefield, target creature an opponent controls gets -2/-2 until end of turn if that opponent controls no other creatures. 4/2 |
| Ambush Gigapede | 4BB | Creature — Insect | Flash When Ambush Gigapede enters the battlefield, target creature an opponent controls gets -2/-2 until end of turn. 6/2 |
| Cogwork Wrestler | U | Artifact Creature — Gnome | Flash When Cogwork Wrestler enters the battlefield, target creature an opponent controls gets -2/-0 until end of turn. 1/2 |