M:tG card similarity search
| Name | Mana | Type | Text | 
|---|---|---|---|
| A-Spell Satchel | 2 | Artifact | Magecraft — Whenever you cast or copy an instant or sorcery spell, put a book counter on Spell Satchel. {T}, Remove a book counter from Spell Satchel: Add {C}. {2}, {T}, Remove two book counters from Spell Satchel: Draw a card. | 
| Busted! | 1U | Instant | Counter target spell unless its controller pays {X}, where X is the number of words in the name with the most words among permanents you control. | 
| Ertai's Scorn | 1UU | Instant | This spell costs {U} less to cast if an opponent cast two or more spells this turn. Counter target spell. | 
| Silumgar's Scorn | UU | Instant | As an additional cost to cast this spell, you may reveal a Dragon card from your hand. Counter target spell unless its controller pays {1}. If you revealed a Dragon card or controlled a Dragon as you cast this spell, counter that spell instead. | 
| Silent Extraction | GU | Instant | Choose target spell. Counter that spell unless its controller pays {2}. Threshold — If seven or more cards are in your graveyard, seek a creature card with the same mana value as the chosen 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." | 
| Horribly Awry | 1U | Instant | Devoid (This card has no color.) Counter target creature spell with mana value 4 or less. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. | 
| Boon of Safety | W | Instant | Put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.) Scry 1. | 
| Draining Whelk | 4UU | Creature — Illusion | Flash Flying When Draining Whelk enters the battlefield, counter target spell. Put X +1/+1 counters on Draining Whelk, where X is that spell's mana value. 1/1 | 
| Summoner's Bane | 2UU | Instant | Counter target creature spell. Create a 2/2 blue Illusion creature token. |