M:tG card similarity search
3U · Instant
Converge — Creatures your opponents control get -X/-0 until end of turn, where X is the number of colors of mana spent to cast this spell. Draw a card.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Cabal Shrine | 1BB | Enchantment | Whenever a player casts a spell, that player discards X cards, where X is the number of cards in all graveyards with the same name as that spell. | 
| Death Kiss | 5R | Creature — Beholder | Whenever a creature an opponent controls attacks one of your opponents, double its power until end of turn. {X}{X}{R}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.) When Death Kiss becomes monstrous, goad up to X target creatures your opponents control. 5/5 | 
| Mana Maze | 1U | Enchantment | Players can't cast spells that share a color with the spell most recently cast this turn. | 
| Graven Lore | 3UU | Snow Instant | Scry X, where X is the amount of {S} spent to cast this spell, then draw three cards. ({S} is mana from a snow source.) | 
| Laughing Jasper Flint | 1BR | Legendary Creature — Lizard Rogue | Creatures you control but don't own are Mercenaries in addition to their other types. At the beginning of your upkeep, exile the top X cards of target opponent's library, where X is the number of outlaws you control. Until end of turn, you may cast spells from among those cards, and mana of any type can be spent to cast those spells. 4/3 | 
| Jaws of Stone | 5R | Sorcery | Jaws of Stone deals X damage divided as you choose among any number of targets, where X is the number of Mountains you control as you cast this spell. | 
| Spoils of War | XB | Sorcery | X is the number of artifact and/or creature cards in an opponent's graveyard as you cast this spell. Distribute X +1/+1 counters among any number of target creatures. | 
| Thornmantle Striker | 4B | Creature — Elf Rogue | When Thornmantle Striker enters the battlefield, choose one — • Remove X counters from target permanent, where X is the number of Elves you control. • Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control. 4/3 | 
| A-Thornmantle Striker | 3B | Creature — Elf Rogue | When Thornmantle Striker enters the battlefield, choose one — • Remove X counters from target permanent, where X is the number of Elves you control. • Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control. 4/3 | 
| Manaplasm | 2G | Creature — Ooze | Whenever you cast a spell, Manaplasm gets +X/+X until end of turn, where X is that spell's mana value. 1/1 |