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 |
|---|---|---|---|
| Rolling Thunder | XRR | Sorcery | Rolling Thunder deals X damage divided as you choose among any number of targets. |
| One with the Machine | 3U | Sorcery | Draw cards equal to the highest mana value among artifacts you control. |
| Kindred Denial | 2UU | Instant | Counter target spell. Seek a card with the same mana value as that spell. |
| God-Eternal Kefnet | 2UU | Legendary Creature — Zombie God | Flying You may reveal the first card you draw each turn as you draw it. Whenever you reveal an instant or sorcery card this way, copy that card and you may cast the copy. That copy costs {2} less to cast. When God-Eternal Kefnet dies or is put into exile from the battlefield, you may put it into its owner's library third from the top. 4/5 |
| Iona, Shield of Emeria | 6WWW | Legendary Creature — Angel | Flying As Iona, Shield of Emeria enters the battlefield, choose a color. Your opponents can't cast spells of the chosen color. 7/7 |
| Heart Warden | 1G | Creature — Elf Druid | {T}: Add {G}. {2}, Sacrifice Heart Warden: Draw a card. 1/1 |
| Ferris Wheel | Artifact — Attraction | Visit — Choose target creature that hasn't been phased out with Ferris Wheel. That creature phases out until you roll a 3 or less while rolling to visit your Attractions. | |
| Panoptic Mirror | 5 | Artifact | Imprint — {X}, {T}: You may exile an instant or sorcery card with mana value X from your hand. At the beginning of your upkeep, you may copy a card exiled with Panoptic Mirror. If you do, you may cast the copy without paying its mana cost. |
| Razia's Purification | 4RW | Sorcery | Each player chooses three permanents they control, then sacrifices the rest. |
| Mental Misstep | U/P | Instant | ({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1. |