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 |
|---|---|---|---|
| Whack | 3B | Sorcery | This spell costs {3} less to cast if it targets a white creature. Target creature gets -4/-4 until end of turn. |
| Spirit Flare | 3W | Instant | Tap target untapped creature you control. If you do, it deals damage equal to its power to target attacking or blocking creature an opponent controls. Flashback—{1}{W}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.) |
| Rogue Kavu | 1R | Creature — Kavu | Whenever Rogue Kavu attacks alone, it gets +2/+0 until end of turn. 1/1 |
| Sky Hussar | 3WU | Creature — Human Knight | Flying When Sky Hussar enters the battlefield, untap all creatures you control. Forecast — Tap two untapped white and/or blue creatures you control, Reveal Sky Hussar from your hand: Draw a card. (Activate only during your upkeep and only once each turn.) 4/3 |
| Merfolk Thaumaturgist | 2U | Creature — Merfolk Wizard | {T}: Switch target creature's power and toughness until end of turn. 1/2 |
| Denizen of the Deep | 6UU | Creature — Serpent | When Denizen of the Deep enters the battlefield, return each other creature you control to its owner's hand. 11/11 |
| Primal Whisperer | 4G | Creature — Elf Soldier | Primal Whisperer gets +2/+2 for each face-down creature on the battlefield. Morph {3}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) 2/2 |
| Spiritual Sanctuary | 2WW | Enchantment | At the beginning of each player's upkeep, if that player controls a Plains, they gain 1 life. |
| Kithkin Daggerdare | 1G | Creature — Kithkin Soldier | {G}, {T}: Target attacking creature gets +2/+2 until end of turn. 1/1 |
| Unstable Robot Dragon | Stickers | {TK}{TK} — {1}: Switch this creature's power and toughness until end of turn. {TK}{TK}{TK}{TK} — Whenever this creature attacks, it gets +5/+5 until end of turn. {TK}{TK} — 3/2 {TK}{TK}{TK} — 2/7 |