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 |
|---|---|---|---|
| Ellivere of the Wild Court | 2GW | Legendary Creature — Human Knight | Whenever Ellivere of the Wild Court enters the battlefield or attacks, create a Virtuous Role token attached to another target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 for each enchantment you control.) Whenever an enchanted creature you control deals combat damage to a player, draw a card. 4/4 |
| Diseased Vermin | 2B | Creature — Rat | Whenever Diseased Vermin deals combat damage to a player, put an infection counter on it. At the beginning of your upkeep, Diseased Vermin deals X damage to target opponent previously dealt damage by it, where X is the number of infection counters on it. 1/1 |
| Niblis of Dusk | 2U | Creature — Spirit | Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) 2/1 |
| Catch | 1UR | Sorcery | Gain control of target permanent until end of turn. Untap it. It gains haste until end of turn. Fuse (You may cast one or both halves of this card from your hand.) |
| Icefeather Aven | GU | Creature — Bird Shaman | Flying Morph {1}{G}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Icefeather Aven is turned face up, you may return another target creature to its owner's hand. 2/2 |
| Moonring Island | Land — Island | ({T}: Add {U}.) Moonring Island enters the battlefield tapped. {U}, {T}: Look at the top card of target player's library. Activate only if you control two or more blue permanents. | |
| Engineered Plague | 2B | Enchantment | As Engineered Plague enters the battlefield, choose a creature type. All creatures of the chosen type get -1/-1. |
| Faerie Formation | 4U | Creature — Faerie | Flying {3}{U}: Create a 1/1 blue Faerie creature token with flying. Draw a card. 5/4 |
| Icebreaker Kraken | 10UU | Snow Creature — Kraken | This spell costs {1} less to cast for each snow land you control. When Icebreaker Kraken enters the battlefield, artifacts and creatures target opponent controls don't untap during that player's next untap step. Return three snow lands you control to their owner's hand: Return Icebreaker Kraken to its owner's hand. 8/8 |
| Mikaeus, the Unhallowed | 3BBB | Legendary Creature — Zombie Cleric | Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever a Human deals damage to you, destroy it. Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.) 5/5 |