M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Black Sun's Twilight | XB | Instant | Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped. |
| Mystic Genesis | 2GUU | Instant | Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value. |
| Brainstealer Dragon | 5BB | Creature — Dragon Horror | Flying At the beginning of your end step, exile the top card of each opponent's library. You may play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it. Whenever a nonland permanent an opponent owns enters the battlefield under your control, they lose life equal to its mana value. 6/6 |
| Shining Shoal | XWW | Instant — Arcane | You may exile a white card with mana value X from your hand rather than pay this spell's mana cost. The next X damage that a source of your choice would deal to you and/or creatures you control this turn is dealt to any target instead. |
| Knollspine Invocation | 1RR | Enchantment | {X}, Discard a card with mana value X: Knollspine Invocation deals X damage to any target. |
| Claim the Firstborn | R | Sorcery | Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn. |
| Ashen Rider | 4WWBB | Creature — Archon | Flying When Ashen Rider enters the battlefield or dies, exile target permanent. 5/5 |
| The Fifteenth Doctor | 2UR | Legendary Creature — Time Lord Doctor | When The Fifteenth Doctor enters the battlefield or attacks, mill three cards. You may put an artifact card with mana value 2 or 3 from among them into your hand. The first nonartifact spell you cast each turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) 3/3 |
| Divine Offering | 1W | Instant | Destroy target artifact. You gain life equal to its mana value. |
| Unforgiving One | 2B | Creature — Spirit | Menace (This creature can't be blocked except by two or more creatures.) Whenever Unforgiving One attacks, return target creature card with mana value X or less from your graveyard to the battlefield, where X is the number of modified creatures you control. (Equipment, Auras you control, and counters are modifications.) 2/3 |