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 |
|---|---|---|---|
| Deepfathom Echo | 2GU | Creature — Merfolk Spirit | At the beginning of combat on your turn, Deepfathom Echo explores. Then you may have it become a copy of another creature you control until end of turn. (To have this creature explore, reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) 4/4 |
| Oblivion Crown | 1B | Enchantment — Aura | Flash (You may cast this spell any time you could cast an instant.) Enchant creature Enchanted creature has "Discard a card: This creature gets +1/+1 until end of turn." |
| Chaos Moon | 3R | Enchantment | At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type. |
| Mirrorweave | 2W/UW/U | Instant | Each other creature becomes a copy of target nonlegendary creature until end of turn. |
| Time Out | 4U | Instant | Roll a six-sided die. Put target nonland permanent into its owner's library just beneath the top X cards of that library, where X is the result. |
| Esper Sentinel | W | Artifact Creature — Human Soldier | Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power. 1/1 |
| Thallid Omnivore | 3B | Creature — Fungus | {1}, Sacrifice another creature: Thallid Omnivore gets +2/+2 until end of turn. If a Saproling was sacrificed this way, you gain 2 life. 3/3 |
| Serum Raker | 2UU | Creature — Phyrexian Drake | Flying When Serum Raker dies, each player discards a card. 3/2 |
| Schema Thief | 3U | Creature — Vedalken Rogue Artificer | Flying Whenever Schema Thief deals combat damage to a player, create a token that's a copy of target artifact that player controls. 3/3 |
| Another Round | XX2W | Sorcery | Exile any number of creatures you control, then return them to the battlefield under their owner's control. Then repeat this process X more times. |