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 |
|---|---|---|---|
| Glint Hawk | W | Creature — Bird | Flying When Glint Hawk enters the battlefield, sacrifice it unless you return an artifact you control to its owner's hand. 2/2 |
| Wild Might | 1G | Instant | Target creature gets +1/+1 until end of turn. That creature gets an additional +4/+4 until end of turn unless any player pays {2}. |
| Sanguimancy | 4B | Sorcery | You draw X cards and you lose X life, where X is your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.) |
| Prismwake Merrow | 2U | Creature — Merfolk Wizard | Flash When Prismwake Merrow enters the battlefield, target permanent becomes the color or colors of your choice until end of turn. 2/1 |
| Swarm Surge | 2B | Sorcery | Devoid (This card has no color.) Creatures you control get +2/+0 until end of turn. Colorless creatures you control also gain first strike until end of turn. |
| Raging Battle Mouse | 1R | Creature — Mouse | The second spell you cast each turn costs {1} less to cast. Celebration — At the beginning of combat on your turn, if two or more nonland permanents entered the battlefield under your control this turn, target creature you control gets +1/+1 until end of turn. 2/1 |
| Groundswell | G | Instant | Target creature gets +2/+2 until end of turn. Landfall — If you had a land enter the battlefield under your control this turn, that creature gets +4/+4 until end of turn instead. |
| Streambed Aquitects | 1UU | Creature — Merfolk Scout | {T}: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.) {T}: Target land becomes an Island until end of turn. 2/3 |
| Night Market Aeronaut | 3B | Creature — Aetherborn Warrior | Flying Revolt — Night Market Aeronaut enters the battlefield with a +1/+1 counter on it if a permanent you controlled left the battlefield this turn. 2/2 |
| Nils, Discipline Enforcer | 2W | Legendary Creature — Human Cleric | At the beginning of your end step, for each player, put a +1/+1 counter on up to one target creature that player controls. Each creature with one or more counters on it can't attack you or planeswalkers you control unless its controller pays {X}, where X is the number of counters on that creature. 2/2 |