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 |
|---|---|---|---|
| Unnatural Predation | G | Instant | Target creature gets +1/+1 and gains trample until end of turn. |
| Temporary Insanity | 3R | Instant | Untap target creature with power less than the number of cards in your graveyard and gain control of it until end of turn. That creature gains haste until end of turn. |
| Flaying Tendrils | 1BB | Sorcery | Devoid (This card has no color.) All creatures get -2/-2 until end of turn. If a creature would die this turn, exile it instead. |
| Mistway Spy | U | Creature — Merfolk Detective | Flying Disguise {1}{U} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When Mistway Spy is turned face up, until end of turn, whenever a creature you control deals combat damage to a player, investigate. 1/1 |
| Blades of Velis Vel | 1R | Tribal Instant — Shapeshifter | Changeling (This card is every creature type.) Up to two target creatures each get +2/+0 and gain all creature types until end of turn. |
| Tibalt's Rager | 1R | Creature — Devil | When Tibalt's Rager dies, it deals 1 damage to any target. {1}{R}: Tibalt's Rager gets +2/+0 until end of turn. 1/2 |
| Cresting Mosasaurus | 6UU | Creature — Dinosaur | Emerge {6}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When Cresting Mosasaurus enters the battlefield, if you cast it, return each non-Dinosaur creature to its owner's hand. 4/8 |
| Atmosphere Surgeon | 1U | Creature — Phyrexian Wizard | Whenever you cast a noncreature spell, put an oil counter on Atmosphere Surgeon. Remove an oil counter from Atmosphere Surgeon: Target creature gains flying until end of turn. Activate only as a sorcery. 2/1 |
| The Core | Legendary Land | (Transforms from Matzalantli.) Fathomless descent — {T}: Add X mana of any one color, where X is the number of permanent cards in your graveyard. | |
| Pygmy Pyrosaur | 1R | Creature — Lizard | Pygmy Pyrosaur can't block. {R}: Pygmy Pyrosaur gets +1/+0 until end of turn. 1/1 |