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 |
|---|---|---|---|
| Rings a Bell | 2UU | Enchantment | As Rings a Bell enters the battlefield, choose a word with four or more letters. After you say the chosen word for the first time each turn, an opponent may ring or imitate a bell within five seconds. When no opponent does, draw a card. |
| Ashling's Prerogative | 1R | Enchantment | As Ashling's Prerogative enters the battlefield, choose odd or even. (Zero is even.) Each creature with mana value of the chosen quality has haste. Each creature without mana value of the chosen quality enters the battlefield tapped. |
| Skittering Monstrosity | 3BB | Creature — Horror | When you cast a creature spell, sacrifice Skittering Monstrosity. 5/5 |
| Wizard's Spellbook | 5UU | Artifact | {T}: Exile target instant or sorcery card from a graveyard. Roll a d20. Activate only as a sorcery. 1—9 | Copy that card. You may cast the copy. 10—19 | Copy that card. You may cast the copy by paying {1} rather than paying its mana cost. 20 | Copy each card exiled with Wizard's Spellbook. You may cast any number of the copies without paying their mana costs. |
| Thunderous Snapper | G/UG/UG/UG/U | Creature — Turtle Hydra | Whenever you cast a spell with mana value 5 or greater, draw a card. 4/4 |
| Skittering Horror | 2B | Creature — Phyrexian Horror | When you cast a creature spell, sacrifice Skittering Horror. 4/3 |
| Coalition Honor Guard | 3W | Creature — Human Flagbearer | While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able. 2/4 |
| Standard Bearer | 1W | Creature — Human Flagbearer | While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able. 1/1 |
| Restore Balance | Sorcery | Suspend 6—{W} Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players sacrifice creatures and discard cards the same way. | |
| Fraternal Exaltation | UUUU | Sorcery | Sneak into your parents' closet to get a deck. Your new brother is joining the game. |