M:tG card similarity search
1U · Artifact — Clue
As Ominous Lockbox enters the battlefield, secretly choose a number between 1 and 20. When an opponent casts a spell with mana value equal to the chosen number, sacrifice Ominous Lockbox. If you do, copy that spell, and you may choose new targets for the copy. {2}, Sacrifice Ominous Lockbox: Draw a card.
| Name | Mana | Type | Text |
|---|---|---|---|
| Quandrix Pledgemage | 1G/UG/U | Creature — Merfolk Druid | Magecraft — Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on Quandrix Pledgemage. 2/2 |
| Orazca Relic | 3 | Artifact | Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) {T}: Add {C}. {T}, Sacrifice Orazca Relic: You gain 3 life and draw a card. Activate only if you have the city's blessing. |
| Theoretical Duplication | 2U | Instant | Whenever a nontoken creature enters the battlefield under an opponent's control this turn, create a token that's a copy of that creature. |
| Mana Drain | UU | Instant | Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value. |
| Cavalier of Night | 2BBB | Creature — Elemental Knight | Lifelink When Cavalier of Night enters the battlefield, you may sacrifice another creature. When you do, destroy target creature an opponent controls. When Cavalier of Night dies, return target creature card with mana value 3 or less from your graveyard to the battlefield. 4/5 |
| Pestilence Rats | 2B | Creature — Rat | Pestilence Rats's power is equal to the number of other Rats on the battlefield. (For example, as long as there are two other Rats on the battlefield, Pestilence Rats's power and toughness are 2/3.) */3 |
| Tethered Griffin | W | Creature — Griffin | Flying When you control no enchantments, sacrifice Tethered Griffin. 2/3 |
| Idol of Endurance | 2W | Artifact | When Idol of Endurance enters the battlefield, exile all creature cards with mana value 3 or less from your graveyard until Idol of Endurance leaves the battlefield. {1}{W}, {T}: Until end of turn, you may cast a creature spell from among cards exiled with Idol of Endurance without paying its mana cost. |
| Necroduality | 3U | Enchantment | Whenever a nontoken Zombie enters the battlefield under your control, create a token that's a copy of that creature. |
| Tapestry of the Ages | 4 | Artifact | {2}, {T}: Draw a card. Activate only if you've cast a noncreature spell this turn. |