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 |
|---|---|---|---|
| Chittering Host | Creature — Eldrazi Horror | Haste Menace (This creature can't be blocked except by two or more creatures.) When Chittering Host enters the battlefield, other creatures you control get +1/+0 and gain menace until end of turn. 5/6 | |
| Solitary Sanctuary | 2W | Enchantment | When Solitary Sanctuary enters the battlefield, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Whenever you tap an untapped creature an opponent controls, put a +1/+1 counter on target creature you control. |
| Festering Newt | B | Creature — Salamander | When Festering Newt dies, target creature an opponent controls gets -1/-1 until end of turn. That creature gets -4/-4 instead if you control a creature named Bogbrew Witch. 1/1 |
| New Prahv Guildmage | WU | Creature — Human Wizard | {W}{U}: Target creature gains flying until end of turn. {3}{W}{U}: Detain target nonland permanent an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.) 2/2 |
| Blister Beetle | 1B | Creature — Insect | When Blister Beetle enters the battlefield, target creature gets -1/-1 until end of turn. 1/1 |
| Rimefur Reindeer | 3W | Creature — Elk | Whenever an enchantment enters the battlefield under your control, tap target creature an opponent controls. 3/4 |
| Screeching Phoenix | 4RR | Creature — Phoenix | Flying {2}{R}: Creatures you control get +1/+0 until end of turn. 4/4 |
| Triangle of War | 1 | Artifact | {2}, Sacrifice Triangle of War: Target creature you control fights target creature an opponent controls. (Each deals damage equal to its power to the other.) |
| Malleable Impostor | 3U | Creature — Faerie Shapeshifter | Flash Flying You may have Malleable Impostor enter the battlefield as a copy of a creature an opponent controls, except it's a Faerie Shapeshifter in addition to its other types and it has flying. 0/0 |
| Archfiend of Ifnir | 3BB | Creature — Demon | Flying Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control. Cycling {2} ({2}, Discard this card: Draw a card.) 5/4 |