M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Thought Collapse | 1UU | Instant | Counter target spell. Its controller mills three cards. |
| Skittering Horror | 2B | Creature — Phyrexian Horror | When you cast a creature spell, sacrifice Skittering Horror. 4/3 |
| Withering Boon | 1B | Instant | As an additional cost to cast this spell, pay 3 life. Counter target creature spell. |
| Boromir, Warden of the Tower | 2W | Legendary Creature — Human Soldier | Vigilance Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. Sacrifice Boromir, Warden of the Tower: Creatures you control gain indestructible until end of turn. The Ring tempts you. 3/3 |
| Perplexing Chimera | 4U | Enchantment Creature — Chimera | Whenever an opponent casts a spell, you may exchange control of Perplexing Chimera and that spell. If you do, you may choose new targets for the spell. (If the spell becomes a permanent, you control that permanent.) 3/3 |
| Arcbound Tracker | 2R | Artifact Creature — Dog | Menace Modular 2 (This creature enters the battlefield with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.) Whenever you cast a spell other than your first spell each turn, put a +1/+1 counter on Arcbound Tracker. 0/0 |
| Undermine | UUB | Instant | Counter target spell. Its controller loses 3 life. |
| Hermit of the Natterknolls | 2G | Creature — Human Werewolf | Whenever an opponent casts a spell during your turn, draw a card. At the beginning of each upkeep, if no spells were cast last turn, transform Hermit of the Natterknolls. 2/3 |
| Breath of the Sleepless | 3U | Enchantment | You may cast Spirit spells as though they had flash. Whenever you cast a creature spell during an opponent's turn, tap up to one target creature. |
| Failed Inspection | 2UU | Instant | Counter target spell. Draw a card, then discard a card. |