M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Voidmage Prodigy | UU | Creature — Human Wizard | {U}{U}, Sacrifice a Wizard: Counter target spell. Morph {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.) 2/1 |
| Amulet of Safekeeping | 2 | Artifact | Whenever you become the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}. Creature tokens get -1/-0. |
| Mental Misstep | U/P | Instant | ({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1. |
| Spell Snare | U | Instant | Counter target spell with mana value 2. |
| Annul | U | Instant | Counter target artifact or enchantment spell. |
| Teferi's Contingency | WUU | Instant | Counter target spell. Each card in its controller's graveyard, hand, and library with the same name as that spell perpetually gains "This spell costs {2} more to cast." |
| Ambiguity | 2UU | Enchantment | Whenever a player plays a spell that counters a spell that has been played or a player plays a spell that comes into play with counters, that player may counter the next spell played or put an additional counter on a permanent that has already been played, but not countered. |
| Spell Burst | XU | Instant | Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Counter target spell with mana value X. |
| Countersquall | UB | Instant | Counter target noncreature spell. Its controller loses 2 life. |
| Spell Blast | XU | Instant | Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.) |